公开(公告)号：US20190081585A1

公开(公告)日：2019-03-14

申请号：US16083691

申请日：2017-02-24

Applicant: DENSO CORPORATION

Inventor： Koichi NAKAMURA ,  Shuji KURAMITSU ,  Atsuko OKA

IPC: H02P21/34 ,  H02P25/22 ,  H02P21/22 ,  B62D5/04

CPC classification number: H02P21/34 ,  B62D5/0403 ,  B62D5/046 ,  H02P6/20 ,  H02P21/22 ,  H02P25/22 ,  H02P27/06

Abstract: A control system includes a plurality of control devices each including an initial check unit that performs an initial check before drive control of a rotary electric machine, a transmission/reception unit that transmits/receives an end signal indicating that the initial check is ended, and a drive control unit that performs the drive control of the rotary electric machine after the initial check. The drive control unit starts the drive control of the rotary electric machine when the initial check of the corresponding control device is ended and the end signal is acquired from another control device, and starts the drive control of the rotary electric machine after a lapse of a predetermined time from the start of the initial check of the corresponding control device when the initial check of the corresponding control device is ended and the end signal is not acquired from the another control device.

公开(公告)号：US20180102719A1

公开(公告)日：2018-04-12

申请号：US15726774

申请日：2017-10-06

Applicant: DENSO CORPORATION

Inventor： Atsuko OKA ,  Shuji KURAMITSU ,  Koichi NAKAMURA

IPC: H02P6/12 ,  H02P6/17 ,  H02P29/68 ,  H02P23/14 ,  H02P21/18 ,  H02P25/14 ,  H02P27/08 ,  H02P21/22

CPC classification number: H02P6/12 ,  H02P6/17 ,  H02P21/18 ,  H02P21/22 ,  H02P23/14 ,  H02P25/145 ,  H02P27/08 ,  H02P27/085 ,  H02P29/024 ,  H02P29/68

Abstract: In a current sensor abnormality diagnosis device, an abnormality judgment section determines that the phase current sensors are operating normally when a sum of three phase currents is not more than a threshold value, and a bus current sensor is operating normally based on a comparison result between three phase currents and a bus current. The abnormality judgment section detects which the phase current sensor has failed based on the three phase currents and the bus current when the sum of the three phase currents is more than the threshold value. Because of using the comparison results of the three phase currents with the bus current in addition to the sum of the three phase currents, it is possible for the abnormality judgment section to detect the occurrence of abnormality of each of these current sensors even if the detected current has an undefined value.

公开(公告)号：US20190291775A1

公开(公告)日：2019-09-26

申请号：US16298224

申请日：2019-03-11

Applicant: DENSO CORPORATION

Inventor： Masaya TAKI ,  Toshihiro FUJITA ,  Shuji KURAMITSU ,  Koichi NAKAMURA ,  Toshimitsu SAKAI

IPC: B62D5/04

Abstract: An ECU, which is a signal control apparatus, has a plurality of control units, which control one same motor. Steering angle calculation units acquire sensor signals from the angle sensors provided corresponding to the steering angle calculation units, respectively, and calculate the steering angles in correspondence to the sensor signals. The angle FB units perform the angle FB control based on the angle differences, which are between the target angle and the steering angle and between the target angle and the steering angle, respectively. In the angular FB unit of at least one of the control units, the angular feedback control is performed using the angle difference, which is subjected to the correction processing to reduce the error between the detection angle of the own system and the detection angle of the other system calculated by the steering angle calculation unit of the other control unit.

公开(公告)号：US20190260324A1

公开(公告)日：2019-08-22

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

IPC: H02P25/22 ,  H02P27/08 ,  H02P21/22 ,  B62D5/04

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.

公开(公告)号：US20190256130A1

公开(公告)日：2019-08-22

申请号：US16405129

申请日：2019-05-07

Applicant: DENSO CORPORATION

Inventor： Shuji KURAMITSU ,  Koichi NAKAMURA ,  Atsuko OKA ,  Masaya TAKI ,  Hideki KABUNE

IPC: B62D5/04 ,  B62D6/00 ,  H02P25/22 ,  H02P27/06 ,  B62D5/00

Abstract: A rotary electric device control device for controlling driving of a rotary electric device including a plurality of winding sets, includes: a plurality of drive circuits; and a plurality of control units that include signal output units for outputting control signals to the drive circuits corresponding to the control units, respectively. The one of the control units generates a control signal according to a command value calculated by each system, a host system detection value relating to a detection value of a host system, and another system detection value relating to another detection value of another system. An electric power steering device includes: the 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.

公开(公告)号：US20190256129A1

公开(公告)日：2019-08-22

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: B62D5/04 ,  H02K11/27 ,  H02P21/22 ,  H02P29/40 ,  H02P6/04

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.

公开(公告)号：US20190152524A1

公开(公告)日：2019-05-23

申请号：US16091247

申请日：2017-04-06

Applicant: DENSO CORPORATION

Inventor： Toshihiro FUJITA ,  Katsuhiko HAYASHI ,  Takaharu KOZAWA ,  Shuhei MIYACHI ,  Koichi NAKAMURA ,  Yuki WATANABE ,  Atsuko OKA ,  Shuji KURAMITSU ,  Toshimitsu SAKAI ,  Masaya TAKI

IPC: B62D15/02 ,  B62D5/04 ,  G01D5/14

Abstract: In a rotation detecting apparatus, each of first and second sensor elements measures rotation of a detection target. A circuit module includes first and second rotational angle calculators each calculating, based on a corresponding one of a first measurement value of the first sensor element and a second measurement value of the second sensor element, a rotational angle of the detection target. The circuit module includes first and second rotation number calculators each calculating, based on the corresponding one of the first measurement value and the second measurement value, a rotation number of the detection target. The circuit module includes first and second communicators each outputting, to a controller, a rotational angle signal based on the rotational angle and a rotation number signal based on the rotation number. A package packages the first and second sensor elements, and is mounted to a circuit board separately from the controller.

公开(公告)号：US20150203148A1

公开(公告)日：2015-07-23

申请号：US14596992

申请日：2015-01-14

Applicant: DENSO CORPORATION

Inventor： Shuji KURAMITSU

IPC: B62D5/04

CPC classification number: B62D5/0463 ,  B62D5/0481 ,  G06F17/11

Abstract: An electric power steering control device for controlling an assist torque output by a motor includes: a steering wheel of a vehicle; a torsion bar between the steering wheel and a column shaft; a torque sensor that detects a steering torque; a turning device that converts a rotation motion of the column shaft into a reciprocating motion of a rack that turns a wheel of the vehicle; the motor; a motor rotation angle sensor that detects a rotation angle of the motor; a steering shaft load estimation unit that estimates a steering shaft load; and a basic assist control unit that calculates a basic assist torque command value. The steering shaft load estimation unit estimates the steering shaft load based on the steering torque, a steering angular velocity or a steering angle acceleration, and a previous value of the basic assist torque command value.

Abstract translation: 一种用于控制由电动机输出的辅助转矩的电动助力转向控制装置，包括：车辆的方向盘; 方向盘和柱轴之间的扭杆; 检测转向转矩的转矩传感器; 旋转装置，其将柱轴的旋转运动转换成转动车辆的车轮的齿条的往复运动; 电机; 电动机旋转角传感器，其检测电动机的旋转角度; 估计转向轴负载的转向轴负载估计单元; 以及基本辅助控制单元，其计算基本辅助转矩指令值。 转向轴负载估计单元基于转向扭矩，转向角速度或转向角加速度以及基本辅助转矩指令值的先前值来估计转向轴负载。