发明名称 |
ELECTRIC POWER STEERING SYSTEM AND METHOD FOR PROCESSING FAIL-SAFE OF ELECTRONIC CONTROL UNIT |
摘要 |
Disclosed are an electric power steering system and a method for processing a fail-safe of an electronic control unit. The present invention provides an electric power steering system including: a torque sensor configured to a steering torque value of a steering wheel; a steering angle sensor configured to detect a steering angle value of the steering wheel; a motor position sensor configured to detect a motor rotation angle value which is a rotated angle of a driving shaft of an electric motor; and an electronic control unit configured, when the torque sensor is normal, to generate a first steering assist current for controlling a driving force of the electric motor using the steering torque value, and when the torque sensor fails, to estimate a target motor angular velocity of the electric motor using the steering angle value and the motor rotation angle value and to generate a second steering assist current so as to cause a current motor angular velocity of the electric motor to converge to the target motor angular velocity. |
申请公布号 |
US2015375776(A1) |
申请公布日期 |
2015.12.31 |
申请号 |
US201514750906 |
申请日期 |
2015.06.25 |
申请人 |
MANDO CORPORATION |
发明人 |
HONG Seung Gyu |
分类号 |
B62D5/04 |
主分类号 |
B62D5/04 |
代理机构 |
|
代理人 |
|
主权项 |
1. An electric power steering system comprising:
a torque sensor configured to detect a steering torque value of a steering wheel; a steering angle sensor configured to detect a steering angle value of the steering wheel; a motor position sensor configured to detect a motor rotation angle value which is a rotated angle of a driving shaft of an electric motor; and an electronic control unit configured, when the torque sensor is normal, to generate a first steering assist current for controlling a driving force of the electric motor using the steering torque value, and when the torque sensor fails, to estimate a target motor angular velocity of the electric motor using the steering angle value and the motor rotation angle value and to generate a second steering assist current so as to cause a current motor angular velocity of the electric motor to converge to the target motor angular velocity. |
地址 |
Pyeongtaek-si KR |