公开(公告)号：US12132359B2

公开(公告)日：2024-10-29

申请号：US17892210

申请日：2022-08-22

Applicant: Nidec Tosok Corporation

Inventor： Takamitsu Suzuki ,  Kei Sato ,  Masaya Furushou

IPC: H02K11/21 ,  H01H3/26 ,  H02K7/00 ,  H02K7/14 ,  H02K11/30

CPC classification number: H02K11/30 ,  H01H3/26 ,  H02K7/003 ,  H02K7/14 ,  H02K11/21

Abstract: An electric actuator includes a motor, an output shaft, a detent plate, an elastic portion including a contacted portion, a first rotation sensor, a second rotation sensor, and a controller. In a case where an abnormality has occurred in the second rotation sensor, the controller executes causing the motor to rotate to cause the contacted portion to abut a first side wall portion located on one end side in the circumferential direction of a first valley portion in the detent plate, acquiring the first rotation angle when the contacted portion abuts on the first side wall portion, reversely rotating the motor to an angle, and determining that the contacted portion is stationary at the parking position.

公开(公告)号：US11739741B2

公开(公告)日：2023-08-29

申请号：US17017709

申请日：2020-09-11

Applicant: NIDEC TOSOK CORPORATION

Inventor： Masaya Furushou ,  Yasuhiro Shirai

IPC: F04B17/03 ,  B60W10/30 ,  F16H57/04 ,  F04B49/02

CPC classification number: F04B17/03 ,  B60W10/30 ,  F04B49/02 ,  F16H57/0436 ,  B60L2240/36

Abstract: A control device for a motor unit provided in a vehicle is disclosed. The motor unit includes a motor including multiple coils provided side by side around a motor axis; a transmission mechanism transmitting power of the motor to an axle; a housing housing the motor and the transmission mechanism; an electric oil pump delivering oil stored in the housing; and a coil temperature sensor detecting a temperature of the coil. The control device includes a motor controller driving and controlling the motor; and a pump controller driving and controlling the electric oil pump. The pump controller estimates an oil temperature according to an ambient temperature and the temperature of the coil, and determines a start timing of the electric oil pump based on an estimated oil temperature.

公开(公告)号：US20210095649A1

公开(公告)日：2021-04-01

申请号：US17017709

申请日：2020-09-11

Applicant: NIDEC TOSOK CORPORATION

Inventor： Masaya Furushou ,  Yasuhiro SHIRAI

IPC: F04B17/03 ,  B60W10/30 ,  F04B49/02 ,  F16H57/04

Abstract: A control device for a motor unit provided in a vehicle is disclosed. The motor unit includes a motor including multiple coils provided side by side around a motor axis; a transmission mechanism transmitting power of the motor to an axle; a housing housing the motor and the transmission mechanism; an electric oil pump delivering oil stored in the housing; and a coil temperature sensor detecting a temperature of the coil. The control device includes a motor controller driving and controlling the motor; and a pump controller driving and controlling the electric oil pump. The pump controller estimates an oil temperature according to an ambient temperature and the temperature of the coil, and determines a start timing of the electric oil pump based on an estimated oil temperature.