发明名称 |
Electric power steering system and method for processing fail-safe of electronic control unit |
摘要 |
An electric power steering system including: a torque sensor; a steering angle sensor configured to detect a steering angle value of a 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 |
US9511794(B2) |
申请公布日期 |
2016.12.06 |
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 |
B62D1/00;B62D5/00;B62D5/04 |
主分类号 |
B62D1/00 |
代理机构 |
McDermott Will & Emery LLP |
代理人 |
McDermott Will & Emery LLP |
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, Gyeonggi-Do KR |