Beijing Idriverplus Information Technology Co., Ltd.

Shibin Zhu

Cheng Xu

Xiao Wang

Fang Zhang

Xiaofei Li

Bo Yan

Dezhao Zhang

Shuhao Huo

Disclosed is zero point compensation method and device for EPS. The method includes: acquiring a value of lateral distance when a vehicle travels along an ideal path and obtaining a smoothed lateral distance value, for each control cycle; calculating a longitudinal movement distance value of the vehicle for each control cycle; performing linear fitting to obtain a linear relationship between the longitudinal movement distance value and the smoothed lateral distance value; calculating a zero point compensation angle for the EPS based on a first parameter in the linear relationship and a preset steering wheel transmission ratio, and compensating a steering control angle; and determining that the zero point compensation angle passes verification when a minimum residual error is less than a preset acceptable deviation. In this way, the time required for calibration can be reduced, and the accuracy and effectiveness of the control algorithm can be improved.

Zero point compensation method and device for electric power steering

Growing community of inventors

Beijing, China

Shibin Zhu