一种无角度传感器的SBW方向盘转角获取方法

摘要

According to the high cost of steering wheel angle sensors ,a method of getting steering wheel angle without angle sensors for steering-by-wire (SBW) system was proposed.The method achieves cross-zero detecting on the rotor displacement an-gle of road feeling motor by making use of the rotor displacement angle of road feeling motor and the thought of multi -sampling, which resulted in computing steering wheel angle .Comparison of the proposed model and dedicated angle sensors shows that the error between them remain less than 10,and can be meet the requirements of SBW system .%文中针对方向盘转角传感器成本高的问题,提出了一种无角度传感器的线控转向系统方向盘转角获取方法.该方法利用线控转向系统路感电机的转子电气角度,采用多点采样的思路,对路感电机的转子电气角度进行实时过零检测,从而计算方向盘的转角.通过该方法获得的方向盘转角与专用转角传感器获得的方向盘转角的比较表明,误差保持在1°以内,满足线控转向系统的要求.