CAJ | 학술논문

在对电动助力转向系统（ EPS）结构分析的基础上，结合汽车动力学特性建立EPS数学模型，依靠Simulink平台搭建了EPS系统仿真模型。本文采用模糊自适应PID控制策略对电机目标电流进行跟踪控制，并且为抑制路面干扰对电机电流采取了补偿措施。在不同路面和不同车速下对系统的常规助力控制，阻尼控制进行仿真分析，仿真结果表明了该控制策略的有效性和实用性，目标电流跟踪效果良好。与无助力系统相比，汽车方向盘操纵转矩明显降低，驾驶员获得了良好的转向路感，系统能有效抑制颠簸路面对方向盘的冲击。
재대전동조력전향계통（ EPS）결구분석적기출상，결합기차동역학특성건립EPS수학모형，의고Simulink평태탑건료EPS계통방진모형。본문채용모호자괄응PID공제책략대전궤목표전류진행근종공제，병차위억제로면간우대전궤전류채취료보상조시。재불동로면화불동차속하대계통적상규조력공제，조니공제진행방진분석，방진결과표명료해공제책략적유효성화실용성，목표전류근종효과량호。여무조력계통상비，기차방향반조종전구명현강저，가사원획득료량호적전향로감，계통능유효억제전파로면대방향반적충격。
Through analyzing of the electric power steering ( EPS ) structure and union the vehicle dynamic characteristics, this paper establishes a mathematical model of EPS.And the EPS system simulation model based on Simulink is built.The fuzzy self-adaptive PID control strategy is adopted to control the actual current of the motor tracking precisely the target current, and the motor current compensation that for inhibition of road surface disturbance is taken.Conventional assist control and damp control that apply to the system with the different road and different speed are simulated and analyzed.The simulation results show that this strategy is effective and practical target current tracking effect is better; The vehicle of steering moment decrease apparently compare with the non-assistant power system;The driver could get seemly road feel;The wallop to steering wheel is restrained effectively when the vehicle is driving on the uneven road.