Provided is a lock function-equipped geared motor having a novel configuration. This geared motor comprises: a first gear provided on a rotor shaft of an electric motor; a second gear supported by a gear casing and engaged with the first gear; an engagement gear fixed to the rotor shaft, and having a ring-shaped annular part, into which the rotor shaft is inserted, and at least one protrusion on the outer periphery of the annular part; and an engagement latch displaceable between a position where the latch engages with the protrusion and a position where the latch does not engage with the protrusion. The engagement gear is fixed to the rotor shaft at a position opposite to a tip of the rotor shaft, with the second gear therebetween.
A magnetic sensor device (1), (2), (3), (4) is provided with an energizing circuit (30) that periodically excites a magnetosensitive body (11) of a magnetic detecting element (10), the energizing circuit (30) comprising: a p-channel type first switching element (31) that is disposed between a power supply (20) and one end (11a) of the magnetosensitive body (11), and that is configured to be capable of switching between an ON state and an OFF state; a second switching element (32) that is disposed between the first switching element (31) and the one end (11a) of the magnetosensitive body (11), and to which a second control signal is input so as to maintain an ON state; and a capacitor (35) that is connected in parallel with a control signal line of the second switching element (32), and that is configured to have a capacitance Ca greater than a parasitic capacitance Cc.
A production method for a negative electrode active material in the present disclosure includes: obtaining a thin piece by cooling molten metal of a hydrogen absorbing alloy containing Ti, Zr, Cr, Mn, and Ni, at a speed of 1×102° C./second to 1×104° C./second, at least to lower than 500° C.; and performing heat treatment of the thin piece at 500° C. to 900° C. for 1 hour to 10 hours in a vacuum or an inert gas atmosphere. The negative electrode active material obtained by the production method includes hydrogen absorbing alloy including a plurality of main phases and a grain boundary phase that exists between mutually adjacent main phases of the main phases, each of the main phases include an AB2 alloy phase, the grain boundary phase includes an AB alloy phase, and the average distance between the mutually adjacent main phases is 1.0 μm or less.
C22F 1/16 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of other metals or alloys based thereon
B22D 11/00 - Continuous casting of metals, i.e. casting in indefinite lengths
C22C 30/00 - Alloys containing less than 50% by weight of each constituent
C22F 1/02 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working in inert or controlled atmosphere or vacuum
H01M 4/38 - Selection of substances as active materials, active masses, active liquids of elements or alloys
4.
NEGATIVE ELECTRODE ACTIVE MATERIAL FOR NICKEL-METAL HYDRIDE BATTERY, AND METHOD FOR PRODUCING THE SAME
The present disclosure provides a negative electrode active material for a nickel-metal hydride battery containing a hydrogen-absorbing alloy that contains Ti, Zr, Cr, Mn, and Ni, and further contains one or more elements selected from the group consisting of La and Ce, wherein a total content proportion of the one or more elements selected from the group consisting of La and Ce based on the entire hydrogen-absorbing alloy is 8 at % or less, and a method for producing the same.
A marker system relatively easily ensuring magnetic marker detection reliability is provided. In a marker system where magnetic markers are arranged as spaced along a path where a vehicle travels, in a combination of two magnetic markers adjacent to each other in a lateral direction and laid on a main road and a side road, respectively, the combination has a combination of different magnetic polarities when a space distance in the lateral direction is equal to or shorter than 0.3 meters, and the combination has a combination of same magnetic polarities when the space distance in the lateral direction exceeds 0.3 meters.
G05D 1/646 - Following a predefined trajectory, e.g. a line marked on the floor or a flight path
G05D 1/244 - Arrangements for determining position or orientation using passive navigation aids external to the vehicle, e.g. markers, reflectors or magnetic means
G05D 107/13 - Spaces reserved for vehicle traffic, e.g. roads, regulated airspace or regulated waters
Provided is a manufacturing method with which it possible to obtain a rare-earth magnet powder that has high magnetic characteristics while, inter alia, reducing rare Ga that runs the risk of unstable supply and conserving energy during the manufacturing process. The present invention is a manufacturing method for a rare-earth magnet powder, the method including: a hydrogen cracking step for introducing hydrogen into a treatment furnace after a casting alloy is heated in the treatment furnace, and obtaining a magnet raw material from the casting alloy that has been exposed to a hydrogen atmosphere of a prescribed temperature; a disproportionation step for causing a disproportionation reaction by causing the magnet raw material to absorb hydrogen; and a recombination step for causing a recombination reaction by dehydrogenating the magnet raw material that has undergone the disproportionation step. The casting alloy contains a rare-earth element (R), boron (B), a transition element (TM), and 0.02-0.3 at% of Cu with respect to the entire alloy, and has a Ga content of 0.1 at% or less. The hydrogen cracking step is performed in a hydrogen atmosphere of 300-525°C.
H01F 41/02 - Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformersApparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils or magnets
B22F 1/00 - Metallic powderTreatment of metallic powder, e.g. to facilitate working or to improve properties
B22F 9/04 - Making metallic powder or suspensions thereofApparatus or devices specially adapted therefor using physical processes starting from solid material, e.g. by crushing, grinding or milling
B22F 9/30 - Making metallic powder or suspensions thereofApparatus or devices specially adapted therefor using chemical processes with decomposition of metal compounds, e.g. by pyrolysis
H01F 1/057 - Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B
Provided is a manufacturing method by which a rare-earth magnet powder having high magnetic properties can be efficiently obtained. This method for manufacturing a rare-earth magnet powder comprises: a hydrogen decrepitation step for obtaining a magnet raw material by introducing hydrogen after heating a cast alloy; a disproportionation step for causing a disproportionation reaction by allowing the magnet raw material to absorb hydrogen; and a recombination step for causing a recombination reaction by desorbing hydrogen from the magnet raw material after the disproportionation step. The recombination step includes: a controlled exhaust step for performing hydrogen desorption in an atmosphere having a large hydrogen partial pressure; and a forced exhaust step for performing hydrogen desorption in an atmosphere having a hydrogen partial pressure smaller than that of the controlled exhaust step. In the manufacturing method of the present invention, the magnet raw material after the controlled exhaust step is disintegrated or pulverized prior to the forced exhaust step. In this way, polycrystallization involving the connection of single crystals having different easy axis directions is suppressed, thereby improving the magnetic properties (particularly Br) of the magnet powder.
H01F 41/02 - Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformersApparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils or magnets
B22F 1/00 - Metallic powderTreatment of metallic powder, e.g. to facilitate working or to improve properties
B22F 3/00 - Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sinteringApparatus specially adapted therefor
B22F 9/04 - Making metallic powder or suspensions thereofApparatus or devices specially adapted therefor using physical processes starting from solid material, e.g. by crushing, grinding or milling
B22F 9/30 - Making metallic powder or suspensions thereofApparatus or devices specially adapted therefor using chemical processes with decomposition of metal compounds, e.g. by pyrolysis
H01F 1/057 - Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B
Provided is a method for producing a rare-earth magnet powder having high magnetic properties. The present invention is a method for producing a rare-earth magnet powder, the method comprising: a disproportionation step for causing hydrogen to be absorbed into a magnet raw material comprising a cast alloy containing a rare earth element, a transition element, and B to cause a disproportionation reaction; and a recombination step for causing a recombination reaction by desorbing hydrogen from the magnet raw material after the disproportionation step. The cast alloy contains 0.02-0.4 at% of Cu and preferably further contains 0.02-1.5 at% of Al. The recombination step is preferably carried out through a controlled exhaust step for heating the magnet raw material after the disproportionation step in a hydrogen atmosphere having a hydrogen pressure of 1.5-3.5 kPa. Further improvement of the magnetic properties (especially coercive force) can be attained by performing a diffusion step for heating, in an inert atmosphere, a mixed raw material obtained by adding a diffusion raw material (Nd-Cu-Al) to the magnet raw material after the recombination step.
H01F 41/02 - Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformersApparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils or magnets
H01F 1/057 - Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B
A magnetic sensor device (1) comprises: an energizing circuit (3) that periodically excites a magnetic detection element (2); and a plurality of sample-and-hold circuits (41) that are electrically connected in parallel to the magnetic detection element (2). A peak detection clock signal generation unit: outputs a peak detection clock signal to each of the plurality of sample-and-hold circuits (41) at a different timing within one excitation period; compares a plurality of acquired hold signals using a peak detection unit; and detects a peak value or a peak timing of a voltage signal Vi.
A magnetic sensor device (1) comprises a magnetic detection element (2), an energization circuit (3) that periodically excites the magnetic detection element (2), and a magnetic detection circuit (4) to which a detection signal (S1) generated in the magnetic detection element (2) in association with periodic excitation is input. The magnetic detection circuit (4) is provided with: a plurality of sample-and-hold circuits (41) that are electrically connected in parallel to the magnetic detection element (2), hold detection signals (S1) at different timings of excitation by the energization circuit (3), and output the detection signals as analog hold signals (S2); and an AD conversion circuit (42) that converts the hold signals (S2) into digital signals.
A rotor for an interior permanent magnet motor for increasing interlinkage magnetic flux, including permanent magnets enclosed in slots of a rotor core made of a magnetic material with a non-magnetic region on the outside of a frame end located on at least one side of one or more of the slots. This non-magnetic region is biased to the side farther from a magnetic pole center with reference to a frame end center of the slot, may be provided in a bridge located on the outer circumferential end side of a slot or in a rib located between adjacent slots, and may be formed by subjecting a part of an electromagnetic steel sheet to non-magnetic modification. At least a part of the non-magnetic region may be composed of a narrow portion in which the bridge radial width or a distance between the adjacent ribs is smaller than surroundings.
A positive electrode active material, including: a main phase including an O2-type layered structure attributable to space group P63mc; and a composition represented by a formula LiaNabMncMdO(2±α), where M represents one or more additive elements selected from the group consisting of Ni, Al, Ti, Sn, Zr, Nb, W, and Mo, the additive elements include at least Ni, and a, b, c, d and a satisfy 0.7≤a≤1.33, 0
C01G 45/1228 - Manganates or manganites with trivalent manganese, tetravalent manganese or mixtures thereof of the type (MnO2)-, e.g. LiMnO2 or Li(MxMn1-x)O2
H01M 10/0568 - Liquid materials characterised by the solutes
A construction member (1) for laying magnetic markers (10) at intervals along a vehicle travel path includes a rod-like holding member (11) for holding two or more magnetic markers (10) at intervals in the lengthwise direction, and the construction member (1) is for construction in which a ground surface (111) forming a lower surface on the occasion of construction is provided and a plurality of magnetic markers (10) are held so that the magnetization directions thereof are aligned along the normal direction of the ground surface (111). The construction member (1) is useful for efficiently laying the magnetic markers (10).
E01F 9/506 - Road surface markingsKerbs or road edgings, specially adapted for alerting road users characterised by the road surface marking material, e.g. comprising additives for improving friction or reflectivityMethods of forming, installing or applying markings in, on or to road surfaces
NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY (Japan)
AICHI STEEL CORPORATION (Japan)
Inventor
Akita Ippei
Tatematsu Shunichi
Abstract
This magnetic sensor comprises: a magnetism detecting unit that outputs a detection signal corresponding to external magnetism; a signal processing unit that generates an output signal by subjecting the detection signal to prescribed signal processing; a current generating unit that generates a bias current; and a conduction limiting unit that limits conduction of the bias current to the magnetism detecting unit for a predetermined time.
NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY (Japan)
AICHI STEEL CORPORATION (Japan)
Inventor
Akita Ippei
Tatematsu Shunichi
Abstract
This magnetic sensor comprises: a magnetism detecting unit that outputs a detection signal corresponding to external magnetism; a signal processing unit that generates an output signal by subjecting the detection signal to prescribed signal processing; and a stabilizing unit that is provided with a current generating unit for generating a feedback current on the basis of the output signal and outputting the feedback current to the magnetism detecting unit, the stabilizing unit suppressing fluctuations in a conversion gain from the external magnetism to the output signal.
Disclosed is an example of a material that has excellent magnetization properties and low iron loss and is provided with high tensile strength. With a core sheet (2) that is composed of a silicon steel sheet and has a wedge portion (7) protruding at a part of a boundary portion (8) between a modified portion (5) and an unmodified portion (6), high magnetization properties, low iron loss, and high strength are achieved.
Provided is an efficient method for forming a modified part in a portion of an electromagnetic steel sheet. The present invention pertains to a method for modifying an electromagnetic steel sheet, the method comprising: a forming step for forming a hole-like or recess-like cavity (11) in a portion of an electromagnetic steel sheet (10); an accommodation step for accommodating a modifying powder (p) for demagnetizing the portion of the electromagnetic steel sheet in the cavity; and a modification step for irradiating at least the modifying powder with a high-energy beam to form a modified part (14) in which the modifying powder has been melted and then solidified. A cavity (22) may be formed by widening a circumferential portion on one side of a through hole (21) and narrowing a circumferential portion on the other side of the through hole. A shaping step may be further performed to make the electromagnetic steel sheet and/or the modified part into a desired shape after the modification step.
C21D 8/12 - Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
H01F 1/147 - Alloys characterised by their composition
H01F 41/02 - Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformersApparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils or magnets
In an actuator, a control board is situated between an electric motor and a worm wheel, and a connector is disposed on the control board. Thus, a longitudinal dimension of the actuator is easily reduced. Since the worm wheel is situated on a same side as an output shaft relative to a worm, a width of the actuator is easily reduced.
A vehicle system (1) switches control between a restart period after restart of a function of controlling traveling of the vehicle following a parking period during which the function is stopped, until the vehicle moves and first detects a magnetic marker and a normal travel period after the vehicle detects the magnetic marker following the restart period. In the restart period, restart control (S105) is performed in which a position of the vehicle is identified based on a position measured in the restart period to cause the vehicle to travel. In the normal travel period, normal travel control (S107) is performed in which the position of the vehicle is identified based on a position of the detected magnetic marker to cause the vehicle to travel.
A control method for causing a vehicle to travel along a target path with high followability includes: a process of measuring deviation in a lateral direction with respect to a magnetic marker; a process of obtaining vehicle azimuth; a process of calculating, for a control point set at a position different from a position of a magnetic unit in a longitudinal direction of the vehicle, deviation of a control point in the lateral direction with respect to the target path, based on the deviation in the lateral direction with respect to the magnetic marker and the vehicle azimuth; a process of calculating a designated steered angle as a control target of the steered angle for bringing the deviation of the control point in the lateral direction closer to zero; and a process of controlling the steered angle of a steered wheel by taking the designated steered angle as the control target.
G05D 1/244 - Arrangements for determining position or orientation using passive navigation aids external to the vehicle, e.g. markers, reflectors or magnetic means
G05D 1/646 - Following a predefined trajectory, e.g. a line marked on the floor or a flight path
The present invention provides a rotor comprising: a main body composed of a soft magnetic material; and a permanent magnet provided inside or outside the main body. The permanent magnet is a bonded magnet comprising a magnet powder and a binder resin that binds the magnet powder. The bonded magnet includes 87-96 mass % of the magnet powder relative to the bonded magnet as a whole. The magnet powder includes coarse powder having an average particle diameter of 40-200 μm and fine powder having an average particle diameter of 1-10 μm. The coarse powder has a mass ratio of 60-90 mass % to a total of the coarse powder and the fine powder. The binder resin includes a thermosetting resin. The bonded magnet has a resin layer with an average thickness of 0.1-5 μm, for example, in a vicinity of a joint interface with the main body. The bonded magnet can be firmly joined to the main body, and the rotor can therefore rotate at high speed. The main body is, for example, a rotor core of an IPM motor.
A case hardening steel for warm forging at a forging temperature of 850° C. to 1100° C. The case hardening steel has a chemical composition including: C: 0.15 to 0.23%; Si: 0.60 to 0.95%; Mn: 0.60 to 1.20%; P: 0.035% or less; S: 0.035% or less; Cr: 1.50% or less (excluding 0%); Al: 0.050% or less; Ti: 0.01 to 0.05%; B: 0.0005 to 0.0050%; N: 0.0020 to 0.0200%; Mo: 0.20% or less as an optional element; Nb: 0.01 to 0.05% as an optional element; and Fe, and satisfies Formulae 1 and 2: Formula 1: 90≥−120*C+20.1*Si−5.3*Mn−8.5*Mo+96≥80, Formula 2: 160≥40*Si+39*Mn+10*Cr+30*Mo+84≥145.
In a vehicle system (100S) for causing a vehicle (2) to travel along a route (100) in which a calibration section and a general section are provided: the lateral displacement amount of the vehicle (2) in the calibration section at a reference time point is acquired as a reference lateral displacement amount; an operation lateral displacement amount, which is the lateral displacement amount of the vehicle (2) in the calibration section at a time point after the start of operation of the system, is acquired; threshold value processing relating to the difference between the reference lateral displacement amount and the operation lateral displacement amount and threshold value processing relating to the general lateral displacement amount in the general section are executed; and in cases where the difference is within a prescribed threshold value and the general lateral displacement amount exceeds the threshold value, an abnormality of a road surface constituting the general section is detected.
A vehicle system (100S) for causing a vehicle (2) to travel along a path (100): acquires a first amount of lateral displacement attributed to lateral acceleration acting on the vehicle (2) due to cant in a calibration section; obtains a second amount of lateral displacement by subtracting the first amount of lateral displacement from the amount of lateral displacement in the calibration section; and performs a first threshold process for the first amount of lateral displacement and a second threshold process for the second amount of lateral displacement to detect abnormalities in a road surface by means of the first threshold process while detecting abnormalities in the wheels of the vehicle 2 by means of the second threshold process.
The present invention addresses the problem of providing a chemical heat accumulator having a high heat accumulation density, and a method for manufacturing the same. A chemical heat accumulator (1) comprises: a heat accumulation body (2) that contains heat accumulation material particles composed of a chemical heat accumulation material; and a container (3) that partitions off, on the interior thereof, an accommodation part (30) in which at least a portion of the heat accumulation body (2) is accommodated in a restrained state. The chemical heat accumulator is characterized by satisfying expression 1, wherein: the state in which the heat accumulation body (2) filled into the accommodation part (30) has not yet reacted with a reaction medium even once is defined as an initial state; the heat accumulation density (GJ/m3) of the heat accumulation body (2) in the accommodation part (30) is denoted by ρ; and the expansion pressure (MPa) of the heat accumulation body (2) when the heat accumulation body (2) in the initial state is reacted with the reaction medium and expands is denoted by P1. Expression 1: ρ/P1≥41
A system 1 for a vehicle comprises a plurality of types of magnetic marker arrays (1A) each including magnetic markers (10) arranged in respective marker arrangement sections (110F) excluding an empty section (110E) and having different patterns in arrangement of N-pole and S-pole magnetic markers (10). The system 1 is capable of providing information to the vehicle by a magnetic method regardless of the entry direction of the vehicle by specifying the type of magnetic marker array (1A) through comparison between a measured magnetic distribution obtained by measuring magnetism acting from a road surface where the magnetic marker arrays (1A) are laid and a template of a two-dimensional magnetic distribution of the magnetic marker arrays (1A).
G06K 19/06 - Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
E01F 9/512 - Preformed road surface markings, e.g. of sheet materialMethods of applying preformed markings
E01F 11/00 - Embedding pads or other sensitive devices in paving or other road surfaces
G05D 1/24 - Arrangements for determining position or orientation
G05D 1/43 - Control of position or course in two dimensions
G05D 1/242 - Means based on the reflection of waves generated by the vehicle
G05D 1/244 - Arrangements for determining position or orientation using passive navigation aids external to the vehicle, e.g. markers, reflectors or magnetic means
G06K 7/08 - Methods or arrangements for sensing record carriers by means detecting the change of an electrostatic or magnetic field, e.g. by detecting change of capacitance between electrodes
G08G 1/09 - Arrangements for giving variable traffic instructions
G05D 105/00 - Specific applications of the controlled vehicles
G05D 107/00 - Specific environments of the controlled vehicles
The present invention addresses the problem of providing a chemical heat storage device with which it is possible to improve the efficiency of heat exchange between a heat storing body and a heat transfer portion, and in which the heat transfer portion is less susceptible to heat damage. A chemical heat storage device (1) comprises: a reactor (2) inside which an accommodating portion (22) is partitioned; a heat storing body (4) disposed in the accommodating portion (22); a heat transfer portion (5) that transfers heat to and from the heat storing body (4); a flow passage portion (20) having a reaction medium flow passage (201) that opens toward the heat storing body (4), allows the passage of the reaction medium, and restricts passage of the heat storing body (4); and a heat transfer auxiliary member (93) that is placed in the accommodating portion (22), undergoes at least one of deformation and movement in conjunction with expansion of the heat storing body (4) resulting from a reaction with the reaction medium, and comes into pressure contact with the heat transfer portion (5), thereby improving the efficiency of heat exchange between the heat storing body (4) and the heat transfer portion (5).
Provided is a method in which a vehicle (2) provided with a magnetic sensor unit (3) that has a plurality of magnetic sensors Cn arranged along the vehicle width direction detects a magnetic marker (10) disposed on a floor surface. When the front-back direction (VL) of the vehicle, which is orthogonal to the vehicle width direction, is angularly offset from the travel direction (MD) of the vehicle, a computing operation for virtually rotating the magnetic sensor unit (3) is performed to generate a virtual unit (3K) in which a plurality of virtual sensors (Kn) are arranged along a direction orthogonal to the travel direction (MD) of the vehicle (2), and a sensor signal produced by the plurality of virtual sensors (Kn) of the virtual unit (3K) is used to detect the magnetic marker (10) with high reliability, regardless of the curvature of a travel path.
The present invention addresses the problem of providing a chemical heat storage device having high reaction efficiency and/or heat transfer efficiency at the time of heat storage/radiation, and having high energy efficiency with respect to the entire system. A chemical heat storage device (1) includes: a reactor (2) in the inside of which a storage part (22) is defined; a heat storage body (4) which is disposed in the storage part (22); a heat transfer member (5) which is arranged inside the heat storage body (4) and in the inside of which a heat medium flow path (52), through which a heat medium for exchanging heat with the heat storage body (4) passes, is defined; and a flow path member (6) which is disposed inside the heat storage body (4) and in the inside of which a reaction medium flow path (60), through which a reaction medium passes and which opens toward the heat storage body (4), is defined.
Provided is a method for detecting magnetic markers (10), arranged so as to be displaced in a lateral direction with respect to a magnetic tape (10T), while a vehicle travels along the magnetic tape (10T), the method involving masking a magnetic sensor located at a tape position, among a plurality of magnetic sensors arranged along a vehicle width direction, and detecting the magnetic markers (10) using sensor signals from the remaining magnetic sensors, thereby reliably detecting the magnetic markers (10) arranged side by side with respect to the magnetic tape (10T) while suppressing erroneous detection caused by the magnetism of the magnetic tape.
A rotor for a reluctance motor according to an aspect of the present disclosure is provided with a rotor core and a pair of end plates. The rotor core is composed of a plurality of laminated electromagnetic steel sheets and includes at least one first reluctance unit. The pair of end plates are (i) disposed at a first end and a second end of the rotor core in a lamination direction of the plurality of electromagnetic steel sheets, and (ii) reinforce the rotor core against centrifugal force applied to the rotor core. A first steel sheet-fitting portion in each of the plurality of electromagnetic steel sheets, and a plate-fitting portion in each of the pair of end plates are positioned between the outer peripheral edge of the rotor core and the at least one first reluctance unit.
A rotor for a reluctance motor according to one aspect of the present disclosure comprises a rotor core formed by a plurality of laminated electromagnetic steel sheets. The rotor core includes a reluctance part. The reluctance part includes a pair of permanent magnets and a bridge part. The bridge part includes a pair of magnetoresistive parts that (i) extend so as to straddle the pair of permanent magnets and (ii) are separated from each other. The bridge part also includes a gap part that (i) is between the pair of magnetoresistive parts and (ii) is formed by a plurality of electromagnetic steel sheets. The pair of magnetoresistive parts have a magnetic permeability smaller than the magnetic permeability of the gap part.
This rotor includes a rotor core and one or more pairs of magnetic pole parts. Each magnetic pole part includes a first magnet hole, a second magnet hole, a first bond magnet, a second bond magnet, a first magnetic path, a second magnetic path, a third magnetic path, a first rib, a central rib, a first peripheral rib, and a second peripheral rib. The widths of the central, first peripheral, and second peripheral ribs are larger than the width of the first rib and equal to each other.
mixmix of 1.5 R or more; and a second phase which has a crystal structure other than C14 type crystal structure. This hydrogen storage alloy powder is maintained at a temperature of 400°C to 800°C in a hydrogen atmosphere having a pressure of 0.02 MPa to 0.1 MPa, and is subsequently subjected to a heat treatment in hydrogen so as to have the hydrogen stored in the hydrogen storage alloy powder desorbed from the hydrogen storage alloy powder, thereby producing a hydrogen storage alloy.
B22F 1/00 - Metallic powderTreatment of metallic powder, e.g. to facilitate working or to improve properties
B22F 9/04 - Making metallic powder or suspensions thereofApparatus or devices specially adapted therefor using physical processes starting from solid material, e.g. by crushing, grinding or milling
Provided is a production device capable of increasing the productivity of a compression bonded magnet that is obtained by performing main molding on a pre-molded body. The present invention is a device (M) for producing a compression bonded magnet, said device comprising: a first molding machine (1) that pressurizes a magnet raw material (p), which contains a mixture or a kneaded product of magnet particles and a binder resin, so as to obtain a first molded body (F1); a second molding machine (2) that pressurizes the first molded body to obtain a second molded body (F2); and a transfer machine 3 that moves, from the first molding machine side to the second molding machine side, a transfer jig (35) which has accommodation spaces (351) conforming to the shape of the first molded body. If the accommodation spaces of the transfer jig and a plurality of holes constituting a first cavity and a second cavity are disposed at substantially the same position, a plurality of compression bonded magnets can be collectively and efficiently produced.
H01F 41/02 - Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformersApparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils or magnets
A gear device (1) comprises: a first multilayer spur gear (10) in which a plurality of first spur gears (10A, 10B, 10C, 10D, 10E) are arranged in series on a first center axle and adjacent first spur gears are mutually displaced in a direction of rotation, the first spur gears rotating integrally about the first center axle; and a second multilayer spur gear (20) in which a plurality of second spur gears (20A, 20B, 20C, 20D) are arranged in series on a second center axle parallel to the first center axle and adjacent second spur gears are mutually displaced in the direction of rotation, the second spur gears rotating integrally about the second center axle.
F16H 55/14 - Construction providing resilience or vibration-damping
F16H 1/06 - Toothed gearings for conveying rotary motion without gears having orbital motion involving only two intermeshing members with parallel axes
F16H 55/12 - Toothed membersWorms with body or rim assembled out of detachable parts
A vehicular system includes a measuring unit attached to a vehicle to detect a magnetic marker laid along a traveling road, a database storing position information of the magnetic marker, and a control unit that acquires the position information of the magnetic marker by referring to a storage area of the database. The database has stored therein position information of each magnetic marker to which a distance from a reference point on the traveling road as a starting point to each magnetic marker is linked. By referring to the database by using a distance traveled until the magnetic marker is detected after the vehicle passes over the reference point, position information of newly detected magnetic marker is acquired.
G05D 1/244 - Arrangements for determining position or orientation using passive navigation aids external to the vehicle, e.g. markers, reflectors or magnetic means
G05D 1/246 - Arrangements for determining position or orientation using environment maps, e.g. simultaneous localisation and mapping [SLAM]
G05D 105/80 - Specific applications of the controlled vehicles for information gathering, e.g. for academic research
G05D 107/13 - Spaces reserved for vehicle traffic, e.g. roads, regulated airspace or regulated waters
G06K 7/10 - Methods or arrangements for sensing record carriers by electromagnetic radiation, e.g. optical sensingMethods or arrangements for sensing record carriers by corpuscular radiation
A position estimation system (1) comprises: a magnetic positioning circuit (153) that estimates the position of a vehicle by using a magnetic marker (10) as a reference; a dead reckoning circuit (151) that estimates the position of the vehicle through dead reckoning based on internal information obtained from the inside of the vehicle; and a filtering circuit (157) that estimates a state quantity including the position of the vehicle on the basis of the position of the vehicle estimated by the magnetic positioning circuit (153) and the position of the vehicle estimated by the dead reckoning circuit (151). The state quantity can be represented by a state equation that includes, as a variable, a sideslip angle, which is an angular difference between the yaw angle of the vehicle and the travel direction of the vehicle. The sideslip angle is estimated using an approximate formula for regular circular turning.
G01C 21/28 - NavigationNavigational instruments not provided for in groups specially adapted for navigation in a road network with correlation of data from several navigational instruments
G08G 1/00 - Traffic control systems for road vehicles
The present invention provides a production method capable of efficiently producing a field element having high characteristics. The present invention pertains to a production method comprising: a molding step for shaping, in a cavity of a housing made of a soft magnetic material, a magnet material containing anisotropic magnet particles and a thermosetting resin while compressing the same in a heat-applying orientation magnetic field to obtain a shape-retained body; and a curing step for heating the shape-retained body to obtain a cured body in which the thermosetting resin is cured. With the production method, a field element in which a bonded magnet made of the cured body is included in the housing is obtained. Here, the contained amount of the thermosetting resin is 4-10 mass% with respect to the entire magnet material. The molding step may be performed at a molding temperature (Tf: ts+5≤Tf≤ts+30°C) that is 5-30°C higher than the softening temperature (ts) of the thermosetting resin. The field element is, for example, a magnet-included rotor in which a bonded magnet is integrated with a slot (cavity) of a rotor core (housing).
H02K 15/03 - Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies having permanent magnets
H02K 1/276 - Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM]
A magnetism measurement device has a first magnetic sensor that detects magnetism acting along any first direction, a second magnetic sensor that detects magnetism acting along a second direction crossing the first direction in which the first magnetic sensor detects magnetism, and a magnetic field generating part that causes a magnetic field to be generated in response to energization, and the magnetic field generating part is incorporated in a state in which positions opposed to the first magnetic sensor and the second magnetic sensor are fixed, so as to act with magnetism along the first direction and the second direction in response to energization.
G01V 3/10 - Electric or magnetic prospecting or detectingMeasuring magnetic field characteristics of the earth, e.g. declination or deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils
41.
MAGNETIC MARKER DETECTION METHOD AND DETECTION SYSTEM
Magnetic marker detection system for a vehicle including sensor array with magnetic sensors arrayed in a width direction to detect a magnetic marker laid in a traveling road includes differential circuit that obtains a difference between magnetic measurement values for each combination of two magnetic sensors spaced with a predetermined space, arithmetic circuit that performs process for detecting a position of the magnetic marker by processing the difference for the each combination, and setting circuit that selectively sets the predetermined space for obtaining the difference between magnetic measurement values; magnetic marker detection system can detect the magnetic marker laid in the traveling road with high certainty, irrespective of variations in attachment height of the magnetic sensors on a vehicle side.
G01D 5/14 - Mechanical means for transferring the output of a sensing memberMeans for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for convertingTransducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage
G01C 21/26 - NavigationNavigational instruments not provided for in groups specially adapted for navigation in a road network
A magnetic detection device includes a magnetoimpedance sensor element, a main operational amplifier whose input terminals are connected to a first end and a second end of a detection coil, a first feedback circuit that is connected between an output terminal of the main operational amplifier and the first end of the detection coil and is configured to generate a first feedback voltage, and a second feedback circuit that is connected between the output terminal of the main operational amplifier and the second end of the detection coil and is configured to generate a second feedback voltage with a polarity that inverts a polarity of the first feedback voltage with respect to a predetermined reference voltage as a baseline.
A high-entropy hydrogen storage alloy includes Ti: 5 atom % or more and 35 atom % or less, Zr: 5 atom % or more and 35 atom % or less, Ni: 5 atom % or more and 35 atom % or less, Cr: 5 atom % or more and 35 atom % or less, and Mn: 5 atom % or more and 35 atom % or less, in which a mixing entropy ΔSmix represented by the following formula (1) is 1.5 R or more. The crystal structure of a main phase is a C14 type.
A high-entropy hydrogen storage alloy includes Ti: 5 atom % or more and 35 atom % or less, Zr: 5 atom % or more and 35 atom % or less, Ni: 5 atom % or more and 35 atom % or less, Cr: 5 atom % or more and 35 atom % or less, and Mn: 5 atom % or more and 35 atom % or less, in which a mixing entropy ΔSmix represented by the following formula (1) is 1.5 R or more. The crystal structure of a main phase is a C14 type.
ΔSmix=−RΣxi ln(xi) (1)
(wherein R in the formula (1) represents the gas constant, and xi represents a molar fraction of an individual element contained in the high-entropy hydrogen storage alloy.)
Provided is an electromagnetic steel sheet having a modified part in a part of a silicon steel sheet. The present invention is a silicon steel sheet having, in a part thereof, a modified part produced by melting and solidification. The modified part has a metal structure containing a primary austenite phase and eutectic crystals. The area ratio of eutectic crystals to the entire metal structure (eutectic ratio) is, e.g., 4-80%. The primary austenite phase may have a primary crystal size of, e.g., 0.5-8 μm. The eutectic crystals comprise an austenite phase and a compound phase. The austenite phase and the primary austenite phase include, e.g., Ni and/or Cr. The compound phase includes B and/or Al. Such an electromagnetic steel sheet is obtained, e.g., by irradiating, with a high-energy beam, a modifier disposed on a specific region of a silicon steel sheet.
C21D 8/12 - Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
Provided is an electromagnetic steel sheet having a modified portion in a part of a silicon steel sheet. The present invention pertains to a silicon steel sheet having, in a part thereof, a modified portion formed by melting and solidifying. The modified portion has a metal structure including an austenite phase and a compound phase. The compound phase may contain a B-based compound having a lower density than the austenite phase. Moreover, the preset invention pertains to a manufacturing method for an electromagnetic steel sheet, the manufacturing method comprising a modifying step for irradiating, with high energy beams, a modifier disposed on a specific region of a silicon steel sheet to form a modified portion containing at least an austenite phase in a part of the silicon steel sheet. The modified portion may contain, for example, 0.15-3 mass% or 0.3-1.5 mass% of B.
C21D 8/12 - Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
C21D 9/46 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for sheet metals
The present invention provides a method for producing an electrical steel sheet which has a modified part in a part of a silicon steel sheet. The present invention provides a method for producing an electrical steel sheet, the method comprising a modification step in which a modified part that contains at least an austenite phase is formed in a part of a silicon steel sheet by irradiating a modification material, which is disposed on a specific region of the silicon steel sheet, with a high-energy beam. The modified part contains 0.3% by mass to 2.5% by mass of C. The modified part is formed from, for example, an iron alloy that contains Ni, Cr, Si and C. The iron alloy may additionally contain B and/or Mn. According to the present invention, defects (such as a shrinkage cavity and a crack) are inhibited from occurring in a modified region when an electrical steel sheet having a modified part is produced, thereby enabling the achievement of enhancement of the degree of freedom in formation of the modified part, improvement of the yield of the silicon steel sheet, efficiency improvement of the modification process, and the like.
C21D 8/12 - Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
B23K 26/34 - Laser welding for purposes other than joining
A vehicle system includes a sensor unit including magnetic sensors for detecting a magnetic marker and non-contact displacement sensors which measure a displacement relative to a road surface where the magnetic marker is laid, a processing circuit which performs detection process for detecting the magnetic marker by processing a magnetic measurement value by the plurality of magnetic sensors, and a switching circuit which switches the detection process in accordance with displacement measurement values by the non-contact displacement sensors. By switching the detection process in accordance with the displacement measurement values by the non-contact displacement sensors, the magnetic marker can be detected with high reliability.
G01D 5/14 - Mechanical means for transferring the output of a sensing memberMeans for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for convertingTransducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage
A patrol robot including a plurality of magnetic sensors for detecting a magnetic marker laid on a traveling road has at least two or more magnetic sensors arrayed on a sensor array line linearly extending along any direction. In the patrol robot, two sensor array lines are formed, and since at least any one sensor array line can cross with respect to a relative moving direction of the magnetic marker with a movement of the patrol robot, the magnetic marker can be detected with high reliability, irrespective of the moving mode.
G05D 1/244 - Arrangements for determining position or orientation using passive navigation aids external to the vehicle, e.g. markers, reflectors or magnetic means
G05D 105/85 - Specific applications of the controlled vehicles for information gathering, e.g. for academic research for patrolling or reconnaissance for police, security or military applications
Provided is an outer rotor, in which an anchor part is provided with a first bulge portion bulging in one direction of rotation directions beyond a first generating line and a second bulge portion bulging in the other direction of the rotation directions beyond a second generating line. This makes it possible to inhibit shrinkage of a binder toward a rotation center. Strain resulting from shrinkage of a magnet part can be distributed over its outer peripheral side and inner peripheral side with the first bulge portion and the second bulge portion therebetween, and thus, occurrence of cracks in the magnet part can be inhibited in the vicinity of the anchor part.
H02K 1/2788 - Outer rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of a single magnet or two or more axially juxtaposed single magnets
F02N 11/00 - Starting of engines by means of electric motors
Provided is a method for manufacturing a magnetic sensor element (1) in which a magnetic body (2), a coil portion (3) wound around the magnetic body (2), a pad portion (4) to which a portion of the magnetic body (2) is electrically connected, and a connecting conductor portion (5) for electrically connecting the magnetic body (2) and the pad portion (4) are formed on a board (11), wherein the connecting conductor portion (5) is formed by reduction type electroless plating.
C23C 18/36 - Coating with one of iron, cobalt or nickelCoating with mixtures of phosphorus or boron with one of these metals using reducing agents using hypophosphites
52.
Information acquisition method and vehicular system
In a vehicular system for a vehicle in which a tag reader for acquiring tag information from a wireless tag is disposed on a front side of a magnetic sensor array to acquire tag information of wireless tag affixed to a magnetic marker laid in a traveling road, after the tag reader acquires the tag information from any wireless tag, when any magnetic marker is detected at a predetermined timing, a process of associating the tag information with the magnetic marker is performed, and information transmitted from the wireless tag is thereby acquired with high reliability.
G08G 1/042 - Detecting movement of traffic to be counted or controlled using inductive or magnetic detectors
G08C 17/02 - Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
G08G 1/01 - Detecting movement of traffic to be counted or controlled
H04Q 9/00 - Arrangements in telecontrol or telemetry systems for selectively calling a substation from a main station, in which substation desired apparatus is selected for applying a control signal thereto or for obtaining measured values therefrom
53.
POWDER FOR MAGNETIC CORE, METHOD FOR MANUFACTURING SAME, AND DUST CORE
A method for manufacturing a powder for magnetic cores includes: a calcination step for heating a first powder composed of an iron alloy containing Si at 975° C. to 1175° C. to obtain a calcined body; a cracking step for disintegrating the calcined body to obtain a second powder; and a powder annealing step for annealing the second powder to obtain a third powder. The powder annealing step is performed, for example, by heating the second powder at 550° C. to 850° C. The third powder is composed, for example, of soft magnetic particles satisfying an average particle diameter of 50 to 250 μm, an average crystal particle diameter of 30 to 100 μm, and an average particle hardness of 100 to 190 Hv. Such a dust core is suitable, for example, when used in an alternating magnetic field having a frequency of 1 to 3 kHz.
H01F 1/24 - Magnets or magnetic bodies characterised by the magnetic materials thereforSelection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys in the form of particles, e.g. powder pressed, sintered, or bound together the particles being insulated
B22F 1/05 - Metallic powder characterised by the size or surface area of the particles
B22F 1/102 - Metallic powder coated with organic material
B22F 1/142 - Thermal or thermo-mechanical treatment
B22F 1/145 - Chemical treatment, e.g. passivation or decarburisation
B22F 1/16 - Metallic particles coated with a non-metal
B22F 3/00 - Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sinteringApparatus specially adapted therefor
In a designing method for setting a specification of an individual-piece magnetic marker to be laid on a road surface, a specification of the magnetic marker is appropriately set based on a correlation coefficient between a first distribution of strengths of magnetism in a forwarding direction acting on a position at a minimum attachment height in a range of attachment heights of the magnetic sensor assumed in respective vehicles and a second distribution representing a distribution of strengths of magnetism in the forwarding direction acting on the position at the minimum attachment height when magnetism is assumed to be generated from a one-point magnetism generation source.
G05D 1/244 - Arrangements for determining position or orientation using passive navigation aids external to the vehicle, e.g. markers, reflectors or magnetic means
E01F 9/30 - Arrangements interacting with transmitters or receivers otherwise than by visible means, e.g. using radar reflectors or radio transmitters
In a vehicular system (1) in which individual piece-like magnetic markers (10) and a continuous belt-shaped magnetic tape (10T) are provided to a route (1R), as juxtaposition markers which are the magnetic markers (10) provided parallel to the the magnetic tape (10T), multipole magnetic markers (10B) that are detected at a vehicle side and that are formed, as one magnetic marker, of a plurality of magnet pieces (100) arranged at intervals therebetween such that magnetic polarities thereof are alternately different are used. A degree of design freedom relating to arrangement of the magnetic markers when the magnetic markers are provided parallel to the magnetic tape is improved.
G05D 1/244 - Arrangements for determining position or orientation using passive navigation aids external to the vehicle, e.g. markers, reflectors or magnetic means
B60L 15/20 - Methods, circuits or devices for controlling the propulsion of electrically-propelled vehicles, e.g. their traction-motor speed, to achieve a desired performanceAdaptation of control equipment on electrically-propelled vehicles for remote actuation from a stationary place, from alternative parts of the vehicle or from alternative vehicles of the same vehicle train for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed
G05D 1/43 - Control of position or course in two dimensions
In a marker detection system for a vehicle including a magnetic sensor to detect a magnetic marker laid in a road surface, the magnetic sensor can measures, for each axis, magnitudes of magnetic components acting along an axis in a vertical direction and an axis in a forwarding direction, and a detection unit identifies a candidate zone to which a possibility that the magnetic marker belongs is high, based on a change in a forwarding direction of the vehicle of a magnetic measurement value along any of the axes and determines whether the magnetic marker has been detected in accordance with a degree of synchronization between a first signal indicating a change of a magnetic measurement value regarding one axis in the candidate zone and a second signal indicating a change of a magnetic measurement value regarding the other axis in the candidate zone.
G01D 5/14 - Mechanical means for transferring the output of a sensing memberMeans for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for convertingTransducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage
09 - Scientific and electric apparatus and instruments
39 - Transport, packaging, storage and travel services
Goods & Services
Position sensors; electronic devices for determining
position of vehicles; navigational instruments and their
parts; optical position sensors; global positioning system
(GPS) apparatus; electronic devices for displaying the
actual location and route guidance for automobiles;
satellite-based global positioning systems; GPS tracking and
location devices; navigational apparatus for automobiles;
downloadable computer software for navigation systems;
electronic devices for receiving map information for
navigation systems; gyroscope sensors; sensors for
determining position; electronic control apparatus;
telecommunication machines and apparatus; magnetic sensors;
measuring or testing machines and instruments; electric or
magnetic meters and testers. Providing information on vehicle position on the road;
providing information on vehicle position on the road via
communication networks; providing traffic information.
A geared electric motor comprises: an output gear configured to rotate around an axial line parallel to a rotor shaft as an axis of rotation; an output shaft configured to rotate integrally with the output gear, the output shaft being arranged at a position facing an input gear with a distance in a direction of the axis of rotation; a first holding member holding the rotor bearing; a second holding member holding a first output bearing; and a third holding member holding a second output bearing. The first holding member, the second holding member, and the third holding member are fixed to each other with the third holding member sandwiched between the first holding member and the second holding member.
A bearing device includes an oil supply body that cooperates with a bearing ring to form an oil retention space to be filled with a lubricating oil. The oil retention space is open at least on a rolling element side. Thus, the lubricating oil is supplied from the oil retention space to a rolling bearing.
F16C 33/66 - Special parts or details in view of lubrication
F16C 19/08 - Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly with two or more rows of balls
62.
RARE-EARTH ANISOTROPIC MAGNET POWDER, AND METHOD FOR PRODUCING SAME
Provided is a rare-earth anisotropic magnet powder capable of achieving high magnetic properties while reducing the usage of Nd and Pr. The present invention provides a rare-earth anisotropic magnet powder comprising magnetic particles that contain rare-earth elements, boron, and a transition metal element. The rare-earth elements include a first rare-earth element that comprises Ce and/or La and a second rare-earth element that comprises Nd and/or Pr. The rare-earth elements have a first ratio (R1/Rt) of 5% to 57%. The first ratio (R1/Rt) is a ratio of an amount (R1) of the first rare-earth element to a total amount (Rt) of the rare-earth elements in terms of the number of atoms. The first rare-earth element has a La ratio (La/R1) of 0% to 35%. The La ratio (La/R1) is a ratio of an amount of La to the amount (R1) of the first rare-earth element in terms of the number of atoms. The magnetic particles have a Ga content of 0.35 at % or less with respect to 100 at % as a whole. By adjusting the Ga content to a predetermined value or less, both the reduction of Nd (Pr) and the high magnetic properties can be achieved at a high level.
H01F 1/057 - Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B
B22F 1/142 - Thermal or thermo-mechanical treatment
B22F 1/145 - Chemical treatment, e.g. passivation or decarburisation
B22F 9/02 - Making metallic powder or suspensions thereofApparatus or devices specially adapted therefor using physical processes
NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY (Japan)
AICHI STEEL CORPORATION (Japan)
Inventor
Akita, Ippei
Yamamoto, Michiharu
Aoyama, Hitoshi
Kawano, Takeshi
Abstract
A magnetic sensor includes: a sensor head having a magnetic material; a drive unit configured to energize the sensor head; a pickup coil close to the sensor head; and an information processing unit configured to generate a bias magnetic field by energizing the pickup coil and detect a signal corresponding to an induced voltage generated in the pickup coil, in which the information processing unit generates a difference signal indicating a difference between a first signal corresponding to a first voltage generated in the pickup coil when the sensor head is in an energized state and a second signal corresponding to a second voltage generated in the pickup coil when the sensor head is in a non-energized state.
Provided is a method for generating 3-dimensional map data representing the 3-dimensional structure of a drive environment of a vehicle, wherein: a first 2-dimensional measurement area sensor (11) that acquires 3-dimensional point cloud data by measuring distance to a target point on a plane diagonally intersecting a central axis CL in the front-rear direction of a dolly (10), and an IMU that acquires positioning information enabling identification of the position and orientation of the dolly (10) are utilized to perform a coordinate conversion process based on the positioning information acquired by the IMU, on the 3-dimensional point cloud data obtained by the 2-dimensional measurement area sensor (11), to thereby convert the data into 3-dimensional point cloud data in which criterion position and orientation are identified; and the 3-dimensional point cloud data after the coordinate conversion is mapped onto a 3-dimensional space to generate 3-dimensional map data.
A vehicular system (1), in which arrangement points for magnetic markers are disposed along a path through which a vehicle passes, includes a parallel section in which two or more paths (1R) are provided in parallel. In two of the paths (1R) adjacent to each other in the parallel section, the arrangement points (10F) are disposed apart from each other in a path direction. In the parallel section, in order to increase reliability in detecting the magnetic markers, the length of a gap G, which is positional deviation in the path direction and which is formed between an arrangement point (10F) disposed in one path (1R) of the two adjacent paths (1R) and an arrangement point (10F) disposed in the other path (1R) thereof, is altered depending on an inter-path distance D which is the distance between the two adjacent paths (1R).
Provided is a simple method for producing a heterocycle-containing amino acid compound. A heterocycle-containing amino acid compound is produced by a method comprising step A of reacting a compound represented by the following formula (2) or a salt thereof:
Provided is a simple method for producing a heterocycle-containing amino acid compound. A heterocycle-containing amino acid compound is produced by a method comprising step A of reacting a compound represented by the following formula (2) or a salt thereof:
Provided is a simple method for producing a heterocycle-containing amino acid compound. A heterocycle-containing amino acid compound is produced by a method comprising step A of reacting a compound represented by the following formula (2) or a salt thereof:
wherein R4 is a hydrogen atom or a carboxyl-protecting group, and n is an integer of 1 to 3,
acrolein, a cyanating agent, and a compound represented by the following formula (3) or a salt thereof:
Provided is a simple method for producing a heterocycle-containing amino acid compound. A heterocycle-containing amino acid compound is produced by a method comprising step A of reacting a compound represented by the following formula (2) or a salt thereof:
wherein R4 is a hydrogen atom or a carboxyl-protecting group, and n is an integer of 1 to 3,
acrolein, a cyanating agent, and a compound represented by the following formula (3) or a salt thereof:
Provided is a simple method for producing a heterocycle-containing amino acid compound. A heterocycle-containing amino acid compound is produced by a method comprising step A of reacting a compound represented by the following formula (2) or a salt thereof:
wherein R4 is a hydrogen atom or a carboxyl-protecting group, and n is an integer of 1 to 3,
acrolein, a cyanating agent, and a compound represented by the following formula (3) or a salt thereof:
wherein R1a is a hydrogen atom or CO2R1b, R1b is a hydrogen atom or a carboxyl-protecting group, R2a is a hydrogen atom or OR2b, R2b i s a hydrogen atom or a hydroxyl-protecting group, and R3 is a hydrogen atom or an amino-protecting group.
A magnetic sensor device (1) comprises: a wiring board (2); a plurality of magnetic detection elements (4) mounted on the wiring board (2); and a rectangular integrated circuit (3) electrically connected to the plurality of magnetic detection elements (4). When viewed from the normal direction of the wiring board (2), the plurality of magnetic detection elements (4) are arranged outside the integrated circuit (3), and magnetic detection elements (4) having magnetic sensing directions that are parallel to each other are arranged at least at positions along each of two mutually opposing sides, namely (31a) and (31b), or (31c) and (31d), of the integrated circuit (3).
A geared motor includes a synchronous reluctance motor whose maximum rotational speed is 20000 rpm to 45000 rpm and in which rare earth bonded magnets are embedded in a rotor, and a speed reducer which reduces the rotational speed of the synchronous reluctance motor to a rotational speed in a usage range while increasing torque to a predetermined range. When a radius of the rotor is represented by R (cm) and a length of the rotor in an axial direction is represented by L (cm), the rotor has a size which satisfies conditions of 2 cm≤R≤6 cm and 2 cm≤L≤25 cm.
H02K 7/116 - Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears
H02K 7/00 - Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
69.
PREFORM, PREFORMING METHOD, AND METHOD OF PRODUCING COMPRESSION-BONDED MAGNET
Provided is a novel form of preform making it possible to ensure shape retention and handleability while also curbing a decline in magnetic properties of a bonded magnet. The present invention is a preform that has: an outer shell formed by the binding of some of a powdered or granulated raw magnet material made of a mixed or kneaded product of magnet particles and thermosetting resin; and an inner part made of the remainder of the raw magnet material inside the outer shell. The outer shell is, for example, a portion where the thermosetting resin has bound while still uncured. The inner part is made of a powdered or granulated raw magnet material. Such a preform is obtained, for example, through a preforming step for warm pressurizing/forming of the raw magnet material. The preforming step is carried out, for example, by setting a preforming temperature (Tp), which is the temperature of an inner wall surface of a preforming mold to be filled with the raw magnet material, to ts ≤ Tp ≤ ts + 20°C (ts: softening point of the thermosetting resin).
H01F 41/02 - Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformersApparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils or magnets
B22F 3/00 - Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sinteringApparatus specially adapted therefor
ININ is supplied to said body, and a detection coil (12) which is wound around the magnetosensitive body (11) and outputs an induced voltage that is generated due to the magnetic change of the magnetosensitive body (11); a sample hold circuit (22, 32) that is connected to one end of the detection coil (12) and holds an output voltage of the detection coil (12) when a sampling switch is turned ON; an amplifier circuit (24, 33) that is connected to the output side of the sample hold circuit (22, 32); and a succeeding high-pass filter (25, 35) that is connected to the output side of the amplifier circuit (24, 33).
NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY (Japan)
AICHI STEEL CORPORATION (Japan)
Inventor
Akita, Ippei
Yamamoto, Michiharu
Aoyama, Hitoshi
Kawano, Takeshi
Abstract
A magnetic sensor includes a magneto-sensitive body whose electromagnetic properties change under an action of an external magnetic field, a coil disposed to obtain an induced voltage proportional to the external magnetic field, a sampler configured to sample the induced voltage generated in the coil and obtains a sampling voltage, and an automatic correction circuit configured to relatively adjust a rise timing of a magneto-sensitive body clock for driving the magneto-sensitive body and a rise timing of a sampler clock for driving the sampler according to the sampling voltage.
09 - Scientific and electric apparatus and instruments
39 - Transport, packaging, storage and travel services
Goods & Services
Position sensors using a magnetic positioning system; electronic devices for determining position of vehicles, namely, vehicle position magnetic sensor module using a magnetic positioning system (MPS); electric navigational instruments and their replacement parts; optical position sensors; global positioning system (GPS) apparatus; electronic navigational and positioning apparatus for displaying the actual location and route guidance for automobiles; satellite-based global positioning systems; GPS tracking and location devices; navigational apparatus for automobiles; downloadable computer software for operating navigation systems; electronic navigational and positioning apparatus for receiving map information for navigation systems; gyroscope sensors; sensors for determining position; electronic machines, apparatus and their replacement parts, namely, electronic measuring machines for identifying and analyzing position of vehicles; telecommunication machines and apparatus, namely, wireless communication machines using electromagnetic fields and radio waves; magnetic sensors, namely, magnetic locators, magnetic object detectors; coordinate measuring machines; testing machines for testing magnetic noise and magnetic field patterns; electric and magnetic meters and testers having a function to generate an arbitrary magnetic field; electric and magnetic meters and testers having a function to create a space free of magnetic fields within equipment Providing information on vehicle position on the road, namely, navigation services using a magnetic positioning system; providing information on vehicle position on the road via communication networks, namely, navigation services using a magnetic positioning system; providing traffic information.
A work system (1) including a work vehicle (11) which, as moving on a road (1R) where magnetic markers (10) are laid, detects the magnetic marker (10) to conduct work of preparation, maintenance, or management of the road (1R) has a control unit (13) which identifies a relative position of the work vehicle (11) with respect to the magnetic marker (10) and identifies a point to be worked on by the work vehicle (11) based on the relative position. With the work vehicle (11) conducting work at the point identified by the control unit (13), work regarding the traveling road where the magnetic markers are laid can be efficiently conducted.
An automatic parking system which controls a vehicle so as to cause the vehicle to be moved to a parking place and accommodated in a parking frame provided in the parking place includes a route where magnetic marker is laid so as to be detectable by using a magnetic sensor array provided to the vehicle, RFID tag providing tag information capable of identifying laying position of the magnetic marker, and a control server device which identifies a vehicle position based on the laying positions of the magnetic markers, allowing highly-accurate identification of the position of the vehicle to be forwarded and allowing operation with high reliability.
G05D 1/00 - Control of position, course, altitude or attitude of land, water, air or space vehicles, e.g. using automatic pilots
G06K 19/07 - Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards with integrated circuit chips
G08G 1/042 - Detecting movement of traffic to be counted or controlled using inductive or magnetic detectors
H04W 4/40 - Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
A vehicle system (1) includes: a database (34) of position data representing discrete points on a route; a first position measurement circuit (31) that measures the position of an ego vehicle, using a magnetic marker; a second position measurement circuit (32) that measures the position of the ego vehicle by autonomous navigation; and a control circuit (35) that performs vehicle control by using, as a control target, a deviation of the position of the ego vehicle relative to the route. In the database (34), marker position data using any one of the discrete points as a reference is recorded in association with position data. The first position measurement circuit (31) refers to the database (34) and identifies a magnetic marker that has been detected. The control circuit (35) refers to the database (34) and identifies the deviation of the position of the ego vehicle relative to the route.
A wireless tag (2) is attached to one of the end portions of a columnar magnetic marker (1). An antenna (3) made of a conductive material for amplifying radio waves transmitted and received by the wireless tag (2) is provided on the outer surface of the magnetic marker (1). The antenna (3) is composed of: an intermediate portion (31) provided on the outer side surface of the magnetic marker (1) and extending along the axial direction; and antenna end portions (33, 35) that electrically extend from the intermediate portion (31) and form electric open ends at one and the other of the end portions of the magnetic marker (1).
G06K 19/077 - Constructional details, e.g. mounting of circuits in the carrier
G08G 1/00 - Traffic control systems for road vehicles
H01Q 1/22 - SupportsMounting means by structural association with other equipment or articles
H01Q 19/02 - Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic Details
A vehicle positioning system (1) includes: a pair of right and left ground speed sensors (12) for optically detecting a ground speed, which is a speed relative to a road surface; a physical quantity arithmetic circuit (101) for obtaining a physical quantity required for autonomous navigation from the ground speed detected by the pair of right and left ground speed sensors (12); and a positioning circuit (103) for measuring a relative position to a reference position when the vehicle moves past the reference position. The positioning circuit (103) measures the relative position by using the physical quantity obtained by the physical quantity arithmetic circuit (101).
G01C 21/12 - NavigationNavigational instruments not provided for in groups by using measurement of speed or acceleration executed aboard the object being navigatedDead reckoning
78.
MAGNETIC MARKER, VEHICULAR SYSTEM, AND MARKER DETECTION METHOD
This magnetic marker (10), which is disposed at distance along a travel path (1R) so as to be detectable during a movement of a vehicle, is a multiple-pole magnetic marker (10B) which is one magnetic marker composed of a plurality of magnet pieces (100) which are arranged so as to have magnetic polarities alternately different from each other. The multiple-pole magnetic marker (10B) can be detected with high reliability by detecting, on the vehicle side, a magnetism change which periodically and repetitively changes, the number of times of the periodic repetition corresponding to the number of the plurality of magnet pieces (100).
H01M 4/525 - Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron of mixed oxides or hydroxides containing iron, cobalt or nickel for inserting or intercalating light metals, e.g. LiNiO2, LiCoO2 or LiCoOxFy
H01M 4/505 - Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of manganese of mixed oxides or hydroxides containing manganese for inserting or intercalating light metals, e.g. LiMn2O4 or LiMn2OxFy
A field magnet manufacturing method including reheating and softening a bonded magnet after thermal curing; and press-fitting the softened bonded magnet into a case from an opening on one side of the case. The case has a cylindrical portion and a lid portion coupled to another side of the cylindrical portion. The cylindrical portion has a fixing portion for the bonded magnet. At least the fixing portion is formed of a magnetic material. The press-fitting includes feeding the bonded magnet relatively into the cylindrical portion while allowing a relative posture variation between the bonded magnet and the case. This makes it possible to stably feed even the softened bonded magnet into the case, and the inner surface of the bonded magnet has a similar accuracy to that of the inner surface of the case.
H02K 15/03 - Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies having permanent magnets
A magneto-impedance sensor element includes a magneto-sensitive body having electromagnetic properties that vary by a magnetic field externally acting thereon; and a detection coil wound around the magneto-sensitive body, in which a voltage corresponding to the intensity of the magnetic field acting on the magneto-sensitive body is output from the detection coil by applying a pulse current or a high-frequency current to the magneto-sensitive body. The magneto-sensitive body includes a first magneto-sensitive section and a second magneto-sensitive section that are configured to carry a pulse current or a high-frequency current in opposite directions to each other.
A field magnet manufacturing method where a bonded magnet's inner surface press-fitted in a yoke has a certain accuracy irrespective of the accuracy of the yoke's outer circumferential surface. A cylindrical bonded magnet from binding magnet particles with a thermosetting resin is fixed in a tubular yoke of magnetic material. The method includes reheating and softening the bonded magnet after thermal curing; and press-fitting in the bonded magnet after the softening step from a tapered portion on one end side of the yoke to press the bonded magnet's outer circumferential surface against the yoke's inner surface. The press-fitting includes feeding the bonded magnet relatively into the yoke while allowing a relative posture variation between the bonded magnet and the yoke so the bonded magnet's inner surface to be remolded into a shape along the inner surface of the yoke exhibits almost the same accuracy as the yoke's inner surface.
H01F 41/02 - Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformersApparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils or magnets
B29C 65/66 - Joining of preformed partsApparatus therefor by liberation of internal stresses, e.g. shrinking of one of the parts to be joined
H01F 1/08 - Magnets or magnetic bodies characterised by the magnetic materials thereforSelection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials metals or alloys in the form of particles, e.g. powder pressed, sintered, or bound together
H01F 1/28 - Magnets or magnetic bodies characterised by the magnetic materials thereforSelection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys in the form of particles, e.g. powder dispersed or suspended in a bonding agent
H02K 15/03 - Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies having permanent magnets
This martensitic stainless steel to be used in a high-pressure hydrogen component has a chemical component composition which: comprises, in mass%, C in the amount of 0.01-0.05%, Si in the amount of 0.70% or less, Mn in the amount of 1.10% or less, P in the amount of 0.040% or less, S in the amount of 0.030% or less, Ni in the amount of 4.00-5.70%, and Cr in the amount of 17.00-20.50%; satisfies formula 1; and has Fe and inevitable impurities as the remainder thereof. Formula 1: 3.0>Ni-0.8Cr+11.36>0, (where the element symbols in formula 1 refer to the value of the content (%) of each of the elements)
This martensite stainless steel for high-pressure hydrogen component has a chemical configuration comprising, in terms of mass%, 0.01-0.05% of C; 0.70% or less of Is; 1.10% or less of Mn; 0.04% or less of P; 0.030% or less of S; 4.00-5.70% of Ni; and 17.00-20.50% of Cr, optionally comprising 0.0005-0.0030% of Ca, and also optionally comprising 0.0005-0.0050% of B, the balance being Fe and unavoidable impurities. The chemical configuration satisfies formula 1. Formula 1: 3.0 > Ni – 0 > Ni – 0.8Cr + 11.36 > 0 (where the symbols of elements in formula 1 represent the value of the content ratio (%) of the respective elements.)
The compound according to the present invention is a heterocycle-containing amino acid compound represented by general formula (1) or a salt thereof. The complex according to the present invention contains a heterocycle-containing amino acid compound or a salt thereof, and a metal element. (In the formula, n is 1, 2, or 3, and R12322OH, or -NR22mm-COOH (where m is 1 or 2, and R2 is a hydrogen atom or a methyl group).)
3abcd(2±α)(2±α). (In the composition formula, M represents one or more additive elements which include at least Ni and are selected from the group consisting Ni, Al, Ti, Sn, Zr, Nb, W and Mo; and a-d and α satisfy 0.7 ≤ a ≤ 1.33, 0 < b < 0.1, 0.7 < c < 0.9, 0.9 < c + d < 1.1, 1.4 ≤ c/d ≤ 12 and 0 ≤ α ≤ 0.3.)
H01M 4/505 - Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of manganese of mixed oxides or hydroxides containing manganese for inserting or intercalating light metals, e.g. LiMn2O4 or LiMn2OxFy
H01M 4/525 - Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron of mixed oxides or hydroxides containing iron, cobalt or nickel for inserting or intercalating light metals, e.g. LiNiO2, LiCoO2 or LiCoOxFy
A magnetic marker (1) is disposed on a road (3) so that the magnetic marker can used for vehicular driving assistance. The magnetic marker is a columnar magnet having a shape such that stress from a force acting from the outside is caused to be non-uniform, thereby causing the generation of locations where the stress is concentrated. The magnetic marker (1) tends to split into a plurality of small pieces after being broken due to the concentration of stress. When pavement damage occurs in the periphery of the magnetic marker (1), it is possible that some of the small pieces being separated will cause the remaining small pieces to remain at the side of the road and the magnetic performance thereof will be maintained, increasing the probability that the functionality of the magnetic marker (1) can be maintained even when the pavement is damaged.
3-2x-α1-xx6-α6-α (provided that L is one or more halogens selected from the group consisting of F, Cl, Br, and I, x satisfies 0 < x ≤ 0.35, and α satisfies 0 ≤ α < 1). This secondary battery has a positive electrode layer including a positive electrode active material, a negative electrode layer including a negative electrode active material, and a separator layer interposed between the positive electrode layer and the negative electrode layer, wherein at least one layer of the positive electrode layer, the negative electrode layer, and the separator layer includes a solid electrolyte having the above-described composition.
H01B 1/06 - Conductors or conductive bodies characterised by the conductive materialsSelection of materials as conductors mainly consisting of other non-metallic substances
A magnetic marker (1), which is laid under a road surface so as to be used for vehicle driving assistance such as automatic steering control for causing a vehicle to travel along a lane and lane deviation warning for warning deviation from the lane: has a split structure formed from a marker body (1B) which is a magnet serving as a magnetism generation source and is laid at the lower side and a yoke (1A) disposed vertically adjacent to and above the marker body (1B); and exhibits excellent characteristics of being able to minimize cost necessary for road maintenance such as resurfacing of the road surface.
G08G 1/00 - Traffic control systems for road vehicles
E01C 1/00 - Design or layout of roads, e.g. for noise abatement, for gas absorption
E01C 19/00 - Machines, tools, or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
E01F 11/00 - Embedding pads or other sensitive devices in paving or other road surfaces
H01F 1/12 - Magnets or magnetic bodies characterised by the magnetic materials thereforSelection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials
This magnetic marker (1) that is embedded in a road surface for use in vehicle driving assistance such as lane-associated autonomous steering or lane departure warnings is an assembly of a plurality of granular magnets (10) having a diameter of 1 mm. In the magnetic marker (1), adjacent magnets (10) among the plurality of magnets (10) are linked to one another using a foamed resin as a linking material. The magnetic marker (1) is provided with exceptional characteristics such that there is a possibility that a given extent of magnetic functionality can be maintained even when pavement is damaged, such as when potholes, which are holes in the road surface, are produced.
Provided is a rotor for an interior permanent magnet motor capable of improving performance by increasing interlinkage magnetic flux. The present invention provides a rotor for an interior permanent magnet motor in which permanent magnets (3) are enclosed in slots (12) of a rotor core (1) made of a magnetic material. The rotor core has a non-magnetic region (110) on the outside of frame edge in at least one of the one or more slots. This non-magnetic region is unevenly distributed on the far side from a magnetic pole center (Pc) with reference to a frame edge center (Ps) of the slot. The non-magnetic region may be provided in a bridge located on the outer peripheral side of the slot or in a rib between adjacent slots. The non-magnetic region is formed, for example, by non-magnetically modifying a part of an electromagnetic steel sheet. At least part of the non-magnetic region may consist of a narrowed portion in which the radial width of the bridge or spacing between adjacent ribs is smaller than in the surroundings thereof.
In an operation system (1) for a bus (5) including a connection point database which stores identification information of a magnetic marker (10) positioned so as to correspond to a connection point (13) between a dedicated lane (111) having magnetic markers (10) laid thereon and a general lane (112), the connection point (13) is set so as to correspond to the magnetic marker (10) according to identification information stored in a connection point database, thereby allowing flexibility in changing a route to be improved in the operation system which causes a vehicle to operate along a route defined in advance.
In a vehicle-oriented system (1) for providing information to a vehicle (5) side by using an information providing area (11) provided on a plane where a vehicle (5) moves, a magnetic distribution indicating the information by a plurality of N-pole magnetic markers (10N) is formed in the information providing area (11), and a sign (100) for identifying a position and orientation of the information providing area (11) is provided in the information providing area (11). Therefore, information can be provided by a magnetic method irrespective of a forwarding direction of the vehicle (5).
In a marker system (1) which includes a plurality of magnetic markers (10) disposed on a road surface for driving assist control of a vehicle (5) including automatic traveling control and in which a wireless tag is affixed to a partial magnetic marker (10A) of the plurality of magnetic markers (10), a sign (1M) for distinguishing between a partial magnetic marker (10A) with a wireless tag affixed thereto and another magnetic marker (10B) without a wireless tag affixed thereto is provided. Thus, it is possible to associate the detected magnetic marker (10) and the wireless tag as a transmission source of tag waves with each other with high reliability.
E01F 9/512 - Preformed road surface markings, e.g. of sheet materialMethods of applying preformed markings
B60W 60/00 - Drive control systems specially adapted for autonomous road vehicles
E01F 9/30 - Arrangements interacting with transmitters or receivers otherwise than by visible means, e.g. using radar reflectors or radio transmitters
E01F 9/524 - Reflecting elements specially adapted for incorporation in or application to road surface markings
G06K 7/10 - Methods or arrangements for sensing record carriers by electromagnetic radiation, e.g. optical sensingMethods or arrangements for sensing record carriers by corpuscular radiation
G06K 19/07 - Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards with integrated circuit chips
95.
METHOD FOR MANUFACTURING ROTOR CORE, ROTOR CORE, HIGH-STRENGTH STEEL SHEET, AND METHOD FOR MANUFACTURING HIGH-STRENGTH STEEL SHEET
At least a part of a bridge portion of each electromagnetic steel sheet is modified, and electromagnetic steel sheets that have undergone the modification are stacked. This allows the bridge portions of a rotor core according to the present embodiment to have a lower magnetic permeability than that of other sites, and it is therefore possible to prevent some of the magnetic field lines from being short-circuited so as to draw a closed curve in the rotor core. Accordingly, a decrease in the efficiency of an interior permanent magnet (IPM) type rotating electric machine can be suppressed.
H02K 15/00 - Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
H02K 1/276 - Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM]
H02K 15/03 - Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies having permanent magnets
96.
RARE-EARTH MAGNETIC POWDER, METHOD FOR MANUFACTURING SAME, AND BOND MAGNET
The present invention provides a method for manufacturing a rare-earth magnetic powder that provides a high magnetic characteristic stably even in a corrosive environment. The method of the present invention comprises a treatment step for contacting magnetic particles containing Nd, Fe, and B with a treatment fluid containing phosphate ion, and a firing step for heating the magnetic particles after the treatment step at 250-350℃. With the method, it is possible to obtain a rare-earth magnetic powder composed of magnetic particles having a coating comprising P, O, and Fe. A content ratio (Nd/Fe), which is the atomic ratio of Nd to Fe contained in the coating, is 0.5 or less, for example, in a range (upper-most region) from the upper-most surface of the coating to a depth of 10 nm. Preferably, the coating is dense without any conspicuous voids and the like near the surface. A bond magnet in which the rare-earth magnetic powder is used is preferable, for example, as a field source for a pumping electric motor for use in a corrosive environment (such as in a water environment or an oil environment).
H01F 1/057 - Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B
97.
RARE EARTH MAGNET POWDER AND PRODUCTION METHOD THEREFOR
The present invention provides a production method for a rare earth magnet powder that is capable of stably exhibiting high magnetic properties even in a corrosive environment. The present invention is a production method for obtaining a rare earth magnet powder constituted by magnet particles that have a coating film including P, O, and Fe, said production method comprising a treatment step for bringing magnet particles containing Nd, Fe, and B, into contact with a treatment solution containing phosphoric acid ions, and a firing step for heating the magnet particles after the treatment step at 250-350°C. The content ratio (Nd/Fe), which is the atomic ratio of Nd with respect to Fe in the coating film, is, for example, not more than 0.5 in the range (outermost region) from the outermost surface of the coating film to a depth of 10 nm. The coating film may be dense, with no prominent voids etc. near the surface thereof. A bonded magnet using such a rare earth magnet powder is suitable, for example, as a field source for a pump motor to be used in corrosive environments (in water, oil, etc.).
B22F 9/00 - Making metallic powder or suspensions thereofApparatus or devices specially adapted therefor
H01F 1/057 - Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B
H01F 1/06 - Magnets or magnetic bodies characterised by the magnetic materials thereforSelection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials metals or alloys in the form of particles, e.g. powder
B22F 1/00 - Metallic powderTreatment of metallic powder, e.g. to facilitate working or to improve properties
98.
WARM-FORGED COMPONENT FOR CARBURIZATION AND METHOD FOR PRODUCING SAME
According to the present invention, a steel stock material having a specific chemical component composition is heated to a rolling temperature of 1150°C to 1350°C and is subsequently rolled, thereby producing a rolled material; and after subjecting the rolled material to warm forging at a temperature that is not less than X°C, which is calculated by formula 1, but not more than 1100°C, the resulting material is cooled at least to 700°C at a cooling rate of 3.0°C/second or less. The present invention enables the achievement of a forged component which has a metal structure that contains 5.0% by area or less of structures other than ferrite and pearlite, wherein: the average particle diameter of the pearlite particles is not less than Y µm, which is calculated by formula 2; the area ratio of the non-recrystallized particles is 3.0% or less; and the number of AlN and NbCN having a circle-equivalent diameter of 100 nm or more is 5/100 µm2 or less. Formula 1: X = 1303 × [Nb] + 857.91 Formula 2: Y = 0.43/(0.94 × [AlN] + 0.92 × [NbCN])
The present invention provides a magnetic member manufacturing method capable of achieving both demagnetization of a part of an electromagnetic steel plate and yield rate improvement based on effective use of the electromagnetic steel plate. A magnetic member manufacturing method according to the present invention comprises a reforming process for demagnetizing a predetermined region of an electromagnetic steel plate. The reforming process comprises a specific radiation process for scanning a high-energy beam along a specific trajectory (t) and radiating the high-energy beam to the electromagnetic steel plate (M). The specific trajectory passes through a planned removal region (101) and a planned remaining region (111), which are set adjacent to each other on the electromagnetic steel plate, and a start point (p0) and an end point (p1) are set within the same planned removal region. The present invention can separate both of a rotor core piece (1) and a stator core piece (2) by punching or the like from one electromagnetic steel plate subjected to the reforming process, for example.
H02K 15/02 - Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
B23K 26/354 - Working by laser beam, e.g. welding, cutting or boring for surface treatment by melting
B23K 26/361 - Removing material for deburring or mechanical trimming
C21D 8/12 - Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
Provided is a rotary electric machine. This rotary electric machine comprises a rotor and has a cooling hole provided inside a shaft. The rotary electric machine comprises: a refrigerant circulation pipe which is inserted in the cooling hole and extends along the cooling hole and through which a refrigerant for cooling circulates; and a turbulence inducing portion which is provided to the outer peripheral surface of the refrigerant circulation pipe and which disturbs the flow of the refrigerant circulating through a gap between the outer peripheral surface and the inner wall of the cooling hole.
