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公开(公告)号：US20220085747A1
公开(公告)日：2022-03-17
申请号：US17474102
申请日：2021-09-14
发明人： Naoki IWAGAMI , Hisashi TAKAHASHI
IPC分类号： H02P29/024 , H02P27/08 , H02M7/5387 , H02M1/32 , B60L15/20
摘要： A motor control device includes a motor drive circuit including an upper arm and a lower arm, an arithmetic processor to control the motor drive circuit, an alternative circuit that can operate as a substitute to replace the arithmetic processor, and a mode switch to switch a control mode between a first control mode, in which the arithmetic processor controls the motor drive circuit, and a second control mode, in which the alternative circuit controls the motor drive circuit, based on a state of the arithmetic processor. The mode switch switches the control mode from the first control mode to the second control mode when a state of the arithmetic processor changes from a normal state to an abnormal state.
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公开(公告)号：US20210006189A1
公开(公告)日：2021-01-07
申请号：US16770179
申请日：2018-11-22
发明人： Shuji ENDO , Hajime NAKANE , Takuya YOKOZUKA , Mikio MORISHIMA , Tokuji TATEWAKI
摘要： A technique for reducing an operation noise even when a high-pass filter is used for controlling a motor is provided. A controller is used in a motor control system for driving a motor by using a drive circuit and an inverter. The controller includes a current control block. The controller performs feedforward control by using a current value, compensates for a term of a self-inductance of the motor included in a current control block by an inverse model, compensates for a phase characteristic of a transfer function of the inverse model by an advance component, and corrects a gain characteristic of the transfer function of the inverse model by a function of a physical quantity obtained based on an angular velocity of the motor, thereby compensating for a phase delay and a gain reduction of a torque output generated by the self-inductance.
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公开(公告)号：US10862415B2
公开(公告)日：2020-12-08
申请号：US16535379
申请日：2019-08-08
发明人： Masanori Watahiki , Tomonari Mori , Tomoya Ueda , Shuji Endo , Tokuji Tatewaki
摘要： A motor controller includes an inverter that drives a motor, an operation controller that controls the inverter according to a current command value, and a torque ripple compensation generator that adds a compensation value to compensate for a torque ripple in the motor to the current command value. The operation controller uses, as the current command value, a q-axis current command value indicating a q-axis current in a rotational coordinate system of the motor, and also uses, as the current command value, at least temporarily a d-axis current command value indicating a d-axis current in the rotational coordinate system, and the torque ripple compensation generator calculates a phase difference of the compensation value with respect to the q-axis current command value according to an equation using the q-axis current command value and the d-axis current command value as variables.
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公开(公告)号：US20190334449A1
公开(公告)日：2019-10-31
申请号：US16394427
申请日：2019-04-25
发明人： Naoki IWAGAMI , Hitoshi KUROYANAGI
摘要： An inverter control device to drive a motor includes high-voltage circuitry that receives a power supply current and a power controller that supplies a driving current to a motor. The inverter control device further includes a first input terminal on a front surface portion of a casing of the high-voltage circuitry, a second input terminal on a power module in the power controller, and a first output terminal on a front surface portion of a casing of the power controller. Out of bus bars that electrically connect the first input terminal and the second input terminal to each other, a thickness of a bus bar on the first input terminal side is thicker than a bus bar on the second input terminal side.
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公开(公告)号：US20190334448A1
公开(公告)日：2019-10-31
申请号：US16394425
申请日：2019-04-25
发明人： Yuki ISHIKAWA , Naoki IWAGAMI , Hitoshi KUROYANAGI
IPC分类号： H02M7/00 , H02K11/33 , H02M7/5387 , H05K5/04 , H05K7/20 , H01L23/473
摘要： An inverter control device includes a flow path through which a cooling refrigerant flows is defined in a bottom surface of a casing made of a metal material. The flow path includes a flow inlet and a flow outlet in a first side surface of the casing, and includes an outward path that extends to a second side surface opposite to the first side surface from the first side surface, and a return path that extends to the first side surface from the second side surface.
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公开(公告)号：US20190334447A1
公开(公告)日：2019-10-31
申请号：US16394419
申请日：2019-04-25
发明人： Naoki IWAGAMI , Hitoshi KUROYANAGI
摘要： An inverter control device to drive a motor includes a power module that supplies a driving current to the motor. The inverter control device further includes a power module board that outputs a driving signal to the power module, a control board that outputs a control signal to the power module board, and a smoothing capacitor. The power module, the power module board, the capacitor, and the control board are sequentially stacked and accommodated in a single casing made of a metal material, the power module being a bottommost layer. An input terminal of a power supply current is located on one side surface of the casing and an output terminal of a driving current of the motor is located on another side surface of the casing orthogonal to the one side surface, and the output terminal and a bus bar connected to the power module are directly connected to each other in a same plane.
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公开(公告)号：US20190103787A1
公开(公告)日：2019-04-04
申请号：US16145482
申请日：2018-09-28
发明人： Osamu MAESHIMA
摘要： A circuit board includes a power supply terminal connection assembly supplied with current from an external power supply, a first motor circuit that generates current to be supplied to a first winding, a first motor terminal connection assembly that supplies the current to the first winding from the first motor circuit, a second motor circuit that generates current to be supplied to a second winding, a second motor terminal connection assembly that supplies the current to the second winding from the second motor circuit, a first region, and a second region, in which the power supply terminal connection assembly is in the first region or the second region on a side of one end portion of a border line between the first and the second region, and the first and second motor terminal connection assemblies are on a side of another end portion of the border line.
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公开(公告)号：US10239468B2
公开(公告)日：2019-03-26
申请号：US15248141
申请日：2016-08-26
发明人： Yushi Takehara
摘要： A method of attaching a vehicle-mounted camera includes assuming in advance a plurality of inclination angles as inclination angles of a glass surface, assuming in advance a plurality of positioning angles smaller in number than the plurality of inclination angles, specifying an inclination angle of the glass surface of a vehicle body to which the vehicle-mounted camera is to be attached, selecting at least one positioning angle from the assumed plurality of positioning angles and preparing a positioning member having the selected positioning angle, and fixing the vehicle-mounted camera to the glass surface of the vehicle body via the prepared positioning member.
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公开(公告)号：US10205215B2
公开(公告)日：2019-02-12
申请号：US15455168
申请日：2017-03-10
发明人： Akito Miyoshi , Hiroyuki Kamo , Masahiro Shindo
摘要： A vehicle includes a vehicle body, a drive mechanism, a windshield, an antenna part provided in a vehicle interior, and a reflection suppression layer including a dielectric layer that closely adheres to a surface on the antenna part side of the windshield. The dielectric layer has a refractive index that is lower than a refractive index of a glass layer of the windshield and higher than a refractive index of air. The dielectric layer has a thickness that allows reflection of the transmission wave to be suppressed by interference between a reflected wave generated by reflection of the transmission wave on an interface on the opposite side of the innermost glass layer of the windshield to the antenna part side, and a reflected wave generated by reflection of the transmission wave on a surface on the antenna part side of the dielectric layer.
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公开(公告)号：US10044100B2
公开(公告)日：2018-08-07
申请号：US15375349
申请日：2016-12-12
发明人： Akira Abe
摘要： In an on-vehicle radar device, a receiving antenna part includes a first antenna array with a plurality of receiving antennas arranged in a first direction perpendicular to a predetermined reference direction, and a second antenna array with three or more receiving antennas arranged in a second direction perpendicular to the reference direction and different from the first direction. A computing part computes the elevation angle of an object, using a first detection angle formed by the reference direction and a direction of the object acquired using the first antenna array in a plane parallel to the reference direction and the first direction, a second detection angle formed by the reference direction and a direction of the object acquired using the second antenna array in a plane parallel to the reference direction and the second direction, and a relative inclination angle formed by the first and second directions.
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