US 12,479,499 B2
Electric power steering apparatus, electric power steering apparatus control method, and steering control device
Makoto Kimura, Hitachinaka (JP)
Assigned to HITACHI ASTEMO, LTD., Hitachinaka (JP)
Appl. No. 18/576,227
Filed by HITACHI ASTEMO, LTD., Hitachinaka (JP)
PCT Filed Jun. 14, 2022, PCT No. PCT/JP2022/023787
§ 371(c)(1), (2) Date Jan. 3, 2024,
PCT Pub. No. WO2023/281990, PCT Pub. Date Jan. 12, 2023.
Claims priority of application No. 2021-114046 (JP), filed on Jul. 9, 2021.
Prior Publication US 2024/0326901 A1, Oct. 3, 2024
Int. Cl. B62D 5/00 (2006.01); B62D 5/04 (2006.01); H02P 27/00 (2006.01)
CPC B62D 5/0484 (2013.01) [B62D 5/0493 (2013.01); H02P 27/00 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An electric power steering apparatus comprising:
a steering device that includes a first actuator and a second actuator and that is capable of steering steered road wheels based on an output of the first actuator and an output of the second actuator; and
a steering control device that is capable of controlling the steering device and that includes
a first control device that is connected to the first actuator and that is capable of controlling the first actuator,
a second control device that is connected to the second actuator and that is capable of controlling the second actuator, and
a third control device that is capable of switching connection to, and disconnection from, at least one of the first actuator and the second actuator,
wherein, when a failure of the first control device is detected, the first control device is disconnected from the first actuator, and the third control device is connected to the first actuator, and
wherein, when a failure of the second control device is detected, the second control device is disconnected from the second actuator, and the third control device is connected to the second actuator.