基于PID控制策略的汽车电动助力转向系统的研究

Study of the Automotive Electric Power Steering System Based on PID Control Strategy

电动助力转向(EPS)是汽车动力转向的新技术和新结构.助力控制是电动助力转向的基本控制策略,并决定 电动助力的特性。EPS的控制系统主要由控制器、传感器、及信号处理电路、助力电机及驱动电路等组成,讨论了电 动助力控制的一般过程、电动机目标电流的控制策略等问题。台架实验表明,提出的控制策略是有效的。

Electric power steering is a new automotive power steering technology and configuration. Power control is the basic control strategy of the electric power steering and detemines characteristics of the electric power steering. The EPS control system consists of the controller, sensors and the signal processing circuits, the electric motor and its driving circuit, etc. In the paper, the general process of the electric power steering control current of the electiric motor, etc are discussed emphatically. It is shown by bench tests the presented control strategy is valid.