公开(公告)号：US20150012178A1

公开(公告)日：2015-01-08

申请号：US14306513

申请日：2014-06-17

Applicant: DENSO CORPORATION

Inventor： Hiroyasu OOTAKE ,  Daisuke KOBAYASHI

IPC: B62D5/04

CPC classification number: B62D5/0487 ,  B62D5/0481 ,  B62D5/049

Abstract: A rotary electric machine control apparatus controls driving of a motor, which generates assist torque in accordance with steering torque inputted by steering operation on a steering wheel. An abnormality detection part acquires a voltage detection value related to an operation parameter, which varies when the motor is being supplied with electric power. The abnormality detection part checks whether the voltage detection value is abnormal based on a variation of the voltage detection value over a predetermined period under a condition that the electric power is supplied to the motor and the steering member is being operated. It is thus possible to determine abnormality of the voltage detection value related to the operation parameter, which varies when the motor is in operation with electric power supply, without erroneous detection.

Abstract translation: 旋转电机控制装置控制电动机的驱动，该电动机根据在方向盘上的转向操作输入的转向转矩产生辅助转矩。 异常检测部获取与电动机供给电力时的操作参数相关的电压检测值，该操作参数发生变化。 异常检测部在电力供给到电动机并且转向构件正在运转的条件下，基于电压检测值在规定期间的变化来检查电压检测值是否异常。 因此，可以确定与电动机在电力供给中运转时的操作参数有关的电压检测值的异常，而不会错误地检测。

公开(公告)号：US20210226572A1

公开(公告)日：2021-07-22

申请号：US17221360

申请日：2021-04-02

Applicant: DENSO CORPORATION

Inventor： Takashi SUZUKI ,  Daisuke KOBAYASHI ,  Masaya TAKI

IPC: H02P29/024 ,  H02P27/12 ,  B62D5/04 ,  H02P21/22 ,  H02P25/22

Abstract: A current sensor state determination device determines that an abnormality is caused in a current sensor when a sum of phase currents based on current detection values from each of the current sensors in three phases is greater than a first determination value, and determines that no abnormality is caused in the current sensor when the sum of phase currents is equal to or less than the first determination value. The state determination device determines that the current sensor is normal when it is determined that (i) no abnormality is caused in a preset electric angle range equal to or less than one electric-angle cycle of the rotating electric machine and (ii) a value of an electric current flowing in the rotating electric machine in a rotating coordinates system calculated based on the current detection value is equal to or greater than a second determination value.

公开(公告)号：US20140265954A1

公开(公告)日：2014-09-18

申请号：US14182309

申请日：2014-02-18

Applicant: DENSO CORPORATION

Inventor： Daisuke KOBAYASHI

IPC: H02P6/00 ,  H02P21/00

CPC classification number: H02P6/28 ,  B62D5/046 ,  B62D5/0481 ,  H02P29/032

Abstract: In a rotating electric machine control device, a voltage command value calculation section calculates a voltage command value based on a current command value and a motor current. An inverter power estimation section estimates an inverter power based on the motor current. A power supply current estimation section estimates a power supply current based on the inverter power and a power supply voltage. A limit gain determination section determines a limit gain based on the power supply current and a target power supply current. A limited voltage command value calculation section calculates a limited voltage command value based on the voltage command value and the limit gain. A current limitation section is capable of limiting the power supply current by outputting a command value corresponding to the limited voltage command value to an inverter portion.

Abstract translation: 在旋转电机控制装置中，电压指令值计算部根据电流指令值和电动机电流来计算电压指令值。 逆变器功率估计部基于电动机电流来推定逆变器功率。 电源电流估计部基于逆变器功率和电源电压来推定电源电流。 限制增益确定部分基于电源电流和目标电源电流来确定极限增益。 有限电压指令值计算部根据电压指令值和极限增益来计算有限电压指令值。 电流限制部能够通过将对应于受限电压指令值的指令值输出到逆变器部来限制电源电流。

公开(公告)号：US20200079421A1

公开(公告)日：2020-03-12

申请号：US16559946

申请日：2019-09-04

Applicant: DENSO CORPORATION

Inventor： Ryo KANO ,  Daisuke KOBAYASHI ,  Takashi SUZUKI

IPC: B62D5/04 ,  B62D1/20 ,  B62D3/12 ,  B62D15/02

Abstract: A power steering apparatus has a first actuator provided as a multi-phase rotating electric machine and disposed on a steering column side of an intermediate shaft and a second actuator disposed on a rack gear side thereof. A first ECU controls a drive of the first actuator and detects an abnormality of the first actuator. The first ECU changes an output of the first actuator based on a notification from a communication bus. The first ECU performs an initial diagnosis of the first actuator at a vehicle startup time for detecting abnormality, by supplying an electric power to the first actuator for not providing a torque to a steering wheel.

公开(公告)号：US20190006979A1

公开(公告)日：2019-01-03

申请号：US16021563

申请日：2018-06-28

Applicant: DENSO CORPORATION

Inventor： Takashi SUZUKI ,  Daisuke KOBAYASHI ,  Masaya TAKI

IPC: H02P29/024 ,  H02P27/12 ,  H02P21/22 ,  B62D5/04

Abstract: A current sensor state determination device determines that an abnormality is caused in a current sensor when a sum of phase currents based on current detection values from each of the current sensors in three phases is greater than a first determination value, and determines that no abnormality is caused in the current sensor when the sum of phase currents is equal to or less than the first determination value. The state determination device determines that the current sensor is normal when it is determined that (i) no abnormality is caused in a preset electric angle range equal to or less than one electric-angle cycle of the rotating electric machine and (ii) a value of an electric current flowing in the rotating electric machine in a rotating coordinates system calculated based on the current detection value is equal to or greater than a second determination value.