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1.发明授权公开(公告)号：US11254352B2
公开(公告)日：2022-02-22
申请号：US16405040
申请日：2019-05-07
Applicant: DENSO CORPORATION
Inventor： Atsuko Oka , Shuji Kuramitsu , Koichi Nakamura , Nobuyori Nakajima , Go Endoh , Yosuke Ogi
IPC: H02P1/46 , B62D5/04 , H02K11/27 , H02P29/40 , H02P6/04 , H02P21/22 , H02P29/60 , H02P29/028 , H02P21/00 , H02P25/22
Abstract: A rotary electric machine control device for controlling driving of a rotary electric machine including a plurality of winding sets, includes: a plurality of drive circuits; and a plurality of control units, each of which includes: an individual current limit value calculation unit; a current limit value calculation unit; and a control signal calculation unit. The current limit value calculation unit switches between a current limit value sharing mode and a current limit value non-sharing mode. An electric power steering device includes: the rotary electric machine control device; the rotary electric machine that outputs an assist torque for assisting a steering operation of a steering wheel by a driver; and a power transmission unit that transmits a driving force of the rotary electric machine to a drive target.
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公开(公告)号：US11685432B2
公开(公告)日：2023-06-27
申请号：US16597145
申请日：2019-10-09
Applicant: DENSO CORPORATION
Inventor： Haruo Suzuki , Nobuyori Nakajima , Koichi Nakamura , Go Endoh , Atsuko Oka , Takashi Suzuki , Yosuke Ogi , Shuji Kuramitsu
CPC classification number: B62D6/008 , B60Q9/00 , B62D5/0481 , B62D15/021
Abstract: A rotation detector has a first controller that monitors abnormality of a rotation number calculated by a rotation number calculator based on the calculated rotation number and a preset rotation angle. The first controller in a first system is configured to output rotation information calculated by a second controller in a second system upon having determination that the rotation number of the first system has abnormality, for a continuation of the rotation information calculation.
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公开(公告)号：US20160079900A1
公开(公告)日：2016-03-17
申请号：US14854575
申请日：2015-09-15
Applicant: DENSO CORPORATION
Inventor： Yosuke Ogi , Daisuke Kobayashi
IPC: H02P21/00
Abstract: A motor control device for controlling a multiphase brushless motor in a vector control manner includes: a current command value generation unit that generates q-axis and d-axis current command values; a controller that calculates q-axis and d-axis voltage command values; a saturation guard unit that corrects the q-axis or d-axis voltage command value to set a magnitude of a voltage vector of the q-axis or d-axis voltage command value to be equal to or smaller than a predetermined voltage guard value; and a current command value limiting unit that limits the q-axis or d-axis current command value using a current limit gain and a current guard value, which are calculated based on a voltage saturation amount as the magnitude of the voltage vector of the q-axis or d-axis voltage command value corrected by the saturation guard unit.
Abstract translation: 用于以矢量控制方式控制多相无刷电动机的电动机控制装置包括：电流指令值生成单元，其产生q轴和d轴电流指令值; 计算q轴和d轴电压指令值的控制器; 饱和保护单元，其校正q轴或d轴电压指令值，以将q轴或d轴电压指令值的电压矢量的大小设置为等于或小于预定电压保护值; 以及电流指令值限制单元，其使用电流限制增益和当前保护值来限制q轴或d轴电流指令值，所述电流限制增益和当前保护值是基于电压饱和量计算的，所述电压饱和量作为q的电压矢量的大小 轴或d轴电压指令值由饱和保护单元校正。
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Patent Agency Ranking
公开(公告)号：US11214304B2
公开(公告)日：2022-01-04
申请号：US16264282
申请日：2019-01-31
Applicant: DENSO CORPORATION
Inventor： Atsuko Oka , Nobuyori Nakajima , Go Endoh , Koichi Nakamura , Yosuke Ogi
IPC: H02P21/22 , B62D6/10 , H02P7/00 , H02P25/22 , B62D5/04 , B62D15/02 , H02K1/00 , H02P21/36 , H02P21/00
Abstract: Inverter circuits are provided for motor winding sets, respectively. Control units are provided for the motor winding sets to generate control signals related to driving of the inverter circuits and control currents flowing through the motor winding sets, respectively, thereby controlling driving of a motor. The control mode includes a manual steering mode for controlling the motor according to a steering operation on a steering wheel by a driver and an automatic steering mode for controlling the motor independently of the steering operation on the steering wheel by the driver. The control units are capable of switching the control modes and differentiate the current control according to the control mode. By making the current control different according to the control mode, it is possible to attain optimal characteristics which correspond to each control mode.
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公开(公告)号：US09473058B2
公开(公告)日：2016-10-18
申请号：US14854575
申请日：2015-09-15
Applicant: DENSO CORPORATION
Inventor： Yosuke Ogi , Daisuke Kobayashi
Abstract: A motor control device for controlling a multiphase brushless motor in a vector control manner includes: a current command value generation unit that generates q-axis and d-axis current command values; a controller that calculates q-axis and d-axis voltage command values; a saturation guard unit that corrects the q-axis or d-axis voltage command value to set a magnitude of a voltage vector of the q-axis or d-axis voltage command value to be equal to or smaller than a predetermined voltage guard value; and a current command value limiting unit that limits the q-axis or d-axis current command value using a current limit gain and a current guard value, which are calculated based on a voltage saturation amount as the magnitude of the voltage vector of the q-axis or d-axis voltage command value corrected by the saturation guard unit.
Abstract translation: 用于以矢量控制方式控制多相无刷电动机的电动机控制装置包括：电流指令值生成单元，其产生q轴和d轴电流指令值; 计算q轴和d轴电压指令值的控制器; 饱和保护单元，其校正q轴或d轴电压指令值，以将q轴或d轴电压指令值的电压矢量的大小设置为等于或小于预定电压保护值; 以及电流指令值限制单元，其使用电流限制增益和当前保护值来限制q轴或d轴电流指令值，所述电流限制增益和当前保护值是基于电压饱和量计算的，所述电压饱和量作为q的电压矢量的大小 轴或d轴电压指令值由饱和保护单元校正。
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公开(公告)号：US11136064B2
公开(公告)日：2021-10-05
申请号：US16597176
申请日：2019-10-09
Applicant: DENSO CORPORATION
Inventor： Nobuyori Nakajima , Haruo Suzuki , Takashi Suzuki , Go Endoh , Koichi Nakamura , Yosuke Ogi , Atsuko Oka , Shuji Kuramitsu
Abstract: A rotation detection device includes a plurality of detectors each including a plurality of calculators respectively calculating a detection value. A control unit of the rotation detection device monitors abnormality of detection values respectively detected by the plurality of detectors, and, when determining abnormality, identifies a calculator calculating an abnormal detection value based on a result of comparison between the detection values of the plurality of calculators. Then, the control unit continues calculation of an absolute angle by using the detection values from the calculators other than the identified calculator.
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公开(公告)号：US10994772B2
公开(公告)日：2021-05-04
申请号：US16702912
申请日：2019-12-04
Applicant: DENSO CORPORATION
Inventor： Takashi Suzuki , Shuji Kuramitsu , Nobuyori Nakajima , Go Endoh , Haruo Suzuki , Koichi Nakamura , Yosuke Ogi , Atsuko Oka
Abstract: A steering system in a vehicle includes a plurality of subsystems provided with a control unit. The control unit includes a storage unit storing steer angle information regarding a steer angle of one of a steering mechanism and a steered mechanism when the steering mechanism or the steered mechanism stops, an abnormality determiner determining abnormality of the motor rotation detection value and the detection circuit in the plurality of subsystems at a start time of a motor based on a comparison of at least two parameters, and a steer angle calculator calculating the steer angle based on the parameters having been determined by the abnormality determiner as not abnormal.
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公开(公告)号：US10862417B2
公开(公告)日：2020-12-08
申请号：US16405049
申请日：2019-05-07
Applicant: DENSO CORPORATION
Inventor： Shuji Kuramitsu , Koichi Nakamura , Atsuko Oka , Masaya Taki , Hideki Kabune , Yuki Watanabe , Toshimitsu Sakai , Yosuke Ogi
Abstract: A rotary electric device control device controls driving of a rotary electric device including a plurality of winding sets. The rotary electric device control device includes: a plurality of drive circuits; and a plurality of control units. The control units include signal output units for outputting control signals to the drive circuits corresponding to the control units, respectively, and communicate with each other. The control units include: one master control unit; and at least one slave control unit. An electric power steering device includes: a rotary electric device control device; the rotary electric device that outputs an assist torque for assisting a steering operation of a steering wheel by a driver; and a power transmission unit that transmits a driving force of the rotary electric device to a drive target.
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