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公开(公告)号：US20240072614A1
公开(公告)日：2024-02-29
申请号：US17766676
申请日：2019-11-18
发明人： Yu KAWANO
CPC分类号： H02K11/0094 , H02K11/21 , H02K11/25 , H02K11/40 , B62D5/0403 , H02K2211/03
摘要： The objective of the present disclosure is to obtain an electric rotating machine apparatus the heat-radiation performance of control circuit boards are secured, and communication between the control circuits and connection thereof with the sensor are realized with a small size and at a low price. A first terminal group and a second terminal group connect
a first control circuit board on which a first control circuit for controlling a current in the winding of a first system is mounted,
a second control circuit board that faces the first control circuit board with respect to the axis line of an output axle and on which a second control circuit for controlling a current in the winding of a second system is mounted, and
a sensor circuit board that faces the axle end of the output axle and on which the sensor and a communication line are mounted.-
公开(公告)号：US20200158788A1
公开(公告)日：2020-05-21
申请号：US16604449
申请日：2017-05-11
发明人： Rei ARAKI , Yu KAWANO , Norihiro YAMAGUCHI
IPC分类号： G01R31/54 , G01R31/364 , G01R1/20 , B60L3/00
摘要： Provided is an electronic control device, including: a plurality of grounding terminals provided to a plurality of grounds in the device individually on a one-to-one basis; a grounding common portion for connecting a plurality of grounding points provided to the plurality of grounds individually on a one-to-one basis; a current detection unit configured to detect each of currents flowing between the plurality of grounding points and the plurality of grounding terminals provided for the plurality of grounding points individually on a one-to-one basis or a current flowing through the grounding common portion; and a controller configured to detect a ground open condition for each of the plurality of grounds by comparing a detection result obtained by the current detection unit with a determination value for determining the ground open condition.
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公开(公告)号：US20170201204A1
公开(公告)日：2017-07-13
申请号：US15324913
申请日：2014-09-09
发明人： Yu KAWANO , Takahiro OKANOUE
IPC分类号： H02P29/024 , H02M1/084 , H02M7/537 , H02P27/08 , H02P6/16
CPC分类号： H02P29/0243 , B62D5/0484 , H02H7/08 , H02H7/1225 , H02M1/084 , H02M7/537 , H02M7/5387 , H02M2001/325 , H02P6/16 , H02P27/08 , H02P29/027 , H02P29/032
摘要： In view of the problem that an existing technique can detect a failure in an arm circuit for each phase and continue motor drive by only a normal phase, but a brake torque is generated due to a closed circuit of the faulty phase, an inverter apparatus for polyphase AC motor drive is provided that includes: a first power supply switching device in a power supply line to an inverter circuit; a second power supply switching device for each phase in the arm circuit of the inverter circuit, and a motor relay switching device in an output path from each phase, wherein the parasitic diodes of the first power supply switching device and second power supply switching device have directional characteristics different from each other, which prevent generation of a closed circuit.
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公开(公告)号：US20210006134A1
公开(公告)日：2021-01-07
申请号：US16982779
申请日：2018-04-20
发明人： Takanori ICHIKAWA , Takashi YAGIHARA , Yu KAWANO
摘要： The electric power steering device includes a motor and a control unit integrated coaxially therewith at an output shaft end of the motor. The motor has two sets of windings independently of each other. The control unit includes two inverter circuits having a plurality of switching elements for supplying currents, and two control circuits for respectively outputting drive signals to the inverter circuits. The inverter circuits are formed by power modules, and have detection terminals for detecting voltages between both ends of shunt resistors for detecting currents. Shield walls for shielding noise are provided to a heatsink for supporting the power modules and control boards forming the control circuits. The shield walls support the control boards.
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公开(公告)号：US20190265070A1
公开(公告)日：2019-08-29
申请号：US16342022
申请日：2016-11-16
发明人： Shusuke HORI , Yosuke YUI , Yu KAWANO , Masahiro KANAMARU
IPC分类号： G01D5/14 , H02K11/215 , G01D11/30 , G01D11/24
摘要： To provide a rotational position detecting device in which a rotational position detection error caused by variation in distance between a sensor magnet and a magnetic sensor is reduced, the rotational position detecting device includes a sensor magnet (30) configured to generate a magnetic flux; a holder (34), which is configured to hold the sensor magnet, and has a pressure-contact portion (340) to be fixed to a shaft (40) of a motor (1); and a magnetic sensor (32) configured to detect the magnetic flux generated by the sensor magnet, the magnetic sensor being directly or indirectly fixed to the motor, and being arranged away from the sensor magnet in an axial direction of the shaft, the shaft having an abutment portion (403, 405, 5) configured to receive a distal end portion (341) of the pressure-contact portion.
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公开(公告)号：US20180292197A1
公开(公告)日：2018-10-11
申请号：US15766488
申请日：2015-11-26
发明人： Akira FURUKAWA , Wakaki MIYAJI , Yu KAWANO
CPC分类号： G01B7/30 , B62D5/0463 , B62D5/049 , B62D15/021 , G01D3/02 , G01D5/12 , G01D5/145 , G01R33/09
摘要： There are arranged a sensor magnet fixed to a rotary shaft and configured to generate a magnetic field for detecting a rotation angle, and a plurality of sensors arranged so as to be opposed to the sensor magnet and each configured to output a sine signal and a cosine signal in accordance with the magnetic field. First and second sensors are arranged on two radial lines different from each other, respectively, out of three radial lines dividing a circumference about the rotary shaft of the sensor magnet into six equal parts. An angle calculation unit is configured to carry out calculation so that 3n-th (n is a natural number) order harmonic components out of odd-order harmonic components of each of the sine signal and the cosine signal output by the first and second sensors cancel one another, to thereby calculate the rotation angle.
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公开(公告)号：US20180245914A1
公开(公告)日：2018-08-30
申请号：US15754114
申请日：2016-10-03
发明人： Akira FURUKAWA , Wataru OZAKI , Yu KAWANO
摘要： Provided is an angle detection device including: a correction signal calculator configured to generate corrected signals from a sine signal and a cosine signal acquired from an angle detector; and an angle calculator configured to calculate an angle signal for a rotary machine from the corrected signals. When one of the sine signal and the cosine signal is defined as a first detection signal, and another one thereof is defined as a second detection signal, the correction signal calculator calculates a corrected first detection signal and a corrected second detection signal, and the angle calculator calculates the angle signal for the rotary machine from the corrected first detection signal and the corrected second detection signal.
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公开(公告)号：US20180006594A1
公开(公告)日：2018-01-04
申请号：US15548480
申请日：2015-02-23
发明人： Akira FURUKAWA , Yu KAWANO
CPC分类号： H02P29/64 , B62D5/0403 , H02K1/272 , H02K9/00 , H02K11/21 , H02P25/16 , H02P27/06 , H02P29/032
摘要： Provided is an electric drive device which controls a current supplied to coils during normal operation so as to be less than a current limit value when normal, which is determined from heat generating properties and heat radiating properties of a thermally coupled body that includes the coils and an inverter circuit. When an abnormality in each group or each phase of the coils and the inverter circuit is detected, the supply of current to all phases of a group suffering an abnormality in the coils, or to a phase that is not capable of continuous operation, is stopped or reduced; and the limit value of the current supplied to a coil that is capable of continuous operation is reset to a current limit value in the event of abnormality, which is larger than the current limit value when normal, within the range of improvement of the heat generating properties of the thermally coupled body due to the stopping or reduction of the supply of current.
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公开(公告)号：US20220146350A1
公开(公告)日：2022-05-12
申请号：US17432539
申请日：2019-06-28
发明人： Yu KAWANO , Takashi YAGIHARA
摘要： In at least two groups of independent sensors connected to an electronic control device(s), at least two output signal ports are included in a sensor of a first group, and one output signal port is included in a sensor of a second group; and two output signals in the first group have different characteristics while having a constant relationship to each other defined in advance, and the one output signal in the second group has an equivalent characteristic to either one of the two output signals in the first group. The electronic control device(s) includes an abnormality determination unit which is configured in such a manner that all of output signals of the output signal ports are compared, and, for the control by the electronic control device(s), only a normal output signal(s) is used among the output signals thereof having been determined by the abnormality determination unit.
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10.发明申请公开(公告)号：US20190074780A1
公开(公告)日：2019-03-07
申请号：US16081547
申请日：2016-04-28
发明人： Akira FURUKAWA , Yu KAWANO , Munenori YAMAMOTO
CPC分类号： H02P6/12 , G01D5/12 , G01D5/24457 , H02P6/16 , H02P29/0241
摘要： A failure determination device for an angle detector for a rotating machine, including: an angle detector, which includes n pole pairs (n>m), and outputs sine and cosine wave-signals in accordance with a rotational position of a rotating machine including a multi-phase winding and m pole pairs (m≥2); and a failure determiner for detecting failure of the detector based on signals from the detector. The detector outputs first and second sine-wave-signals having 180° phases different, and first and second cosine-wave-signals having 180° phases different. The failure determiner determines malfunction of the detector when the failure is determined with use of at least one of: failure determination using a sum of the first and second sine-wave-signals and a sum of the first and second cosine-wave-signals; or failure determination using a sum of squares or a square root of a sum of squares of the sine-wave-signal and the cosine-wave-signal.
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