A motor drive system is provided in a steer-by-wire system in which a steering mechanism and a turning mechanism of a vehicle are mechanically separated. The motor drive system includes a reaction force actuator and a turning actuator. The reaction force actuator functions as a motor configured to output a reaction force torque corresponding to a steering torque of a driver and a road surface reaction force. The turning actuator functions as a motor configured to output a turning torque for turning wheels. Each of the reaction force actuator and the turning actuator includes a plurality of control calculation units provided redundantly and each configured to perform a calculation related to a motor drive control, and a plurality of motor drive units provided redundantly and each configured to drive and output the torque based on a drive signal generated by a corresponding control calculation unit.
MOTOR DRIVE SYSTEM
2022-08-11
Patent
Electronic Resource
English
IPC: | B62D MOTOR VEHICLES , Motorfahrzeuge |