基于提高EPS控制器防倒拖能力的控制策略研究

Research on Control Strategy Based on Improving the Anti-backdrag Ability of EPS Controller

电机在工作中如果出现倒拖工况时会产生反电动势,该反电动势超出一定限值会对驱动电路中所用金氧半场效晶体管(MOSFET)造成损坏,本文提供了一种提高电动助力转向系统(EPS)控制器防倒拖能力的控制策略,无须在硬件上额外增加电路,本文对具体实现做了介绍。

If the motor rotates in an unexpected direction,it will produce BEMF.If the BEMF exceeds a certain Jimit value,it will damage the MOSFET used in the drive circuit.This paper provides a control strategy for EPS contoler to improve the effect of motor reverse rotation,which docs not necd additional hardware circuits,and introduccs the spccifc implementation.