公开(公告)号：US20240262417A1

公开(公告)日：2024-08-08

申请号：US18569385

申请日：2022-05-10

申请人： Hitachi Astemo, Ltd.

发明人： Chung Kim TANG ,  Kenta MAEDA ,  Huajun LIU ,  Atsushi HIRATA ,  Yasuhito NAKAKUKI

IPC分类号： B62D6/00

CPC分类号： B62D6/008

摘要： A control device method for steer by wire, the control device including a first motor controlling steering via an FBA and a second motor controlling a steering angle of a wheel via an RWA and being capable of bidirectionally controlling the first motor and the second motor includes a base SAT that obtains a reference torque based on an angle of the first motor and a vehicle speed, and a rack force estimation portion that estimates rack force as a reaction force based on a steering angle of a wheel and an RWA. A first control mode controls a reference torque of the first motor and a second control mode controls the first motor based on a reaction force estimation by the rack force estimation portion, the first and second control modes are switched based on output of the base SAT and output of the rack force estimation portion.