公开(公告)号：US09688303B1

公开(公告)日：2017-06-27

申请号：US15040760

申请日：2016-02-10

Applicant: HIWIN TECHNOLOGIES CORP.

Inventor： Chih-Wei Yang

IPC: B62D6/00 ,  B62D5/04 ,  B60W10/20 ,  B60W10/30

CPC classification number: B62D5/049 ,  B60W10/20 ,  B60W10/30 ,  B60W2510/20 ,  B60W2520/06 ,  B60W2520/30 ,  B60W2540/18 ,  B60W2710/0677 ,  B60W2710/207 ,  B62D5/046 ,  B62D5/0481 ,  B62D15/0235

Abstract: A system and method for detecting failure of a steering angle sensor include: a steering angle sensor, an angular position encoder and an electronic control unit. The electronic control unit reads an initial value of the steering wheel rotation angle signal and estimates a rotation angle of a steering wheel based on the motor rotation angle signal, the electronic control unit checks if a difference between an actual value of the steering wheel rotation angle signal and an estimated rotation angle of the steering wheel is smaller than a predetermined value or not, if the difference is bigger than the predetermined value, it means that the steering wheel rotation angle signal fails, and the estimated rotation angle of the steering wheel serves as a substitute signal and is sent to the electronic control unit.