ECAS车辆车身高度调节系统与整车性能匹配研究  

Research on Body Height Adjustment System for Vehicles with Electrically Controlled Air Suspension and Performance Compromise

作　　者：陈月霞[1] 陈龙[1] 黄晨[1] 徐兴[1] 张孝良[1] 汪若尘[1] 

机构地区：[1]江苏大学汽车与交通工程学院,镇江212013

出　　处：《振动．测试与诊断》2013年第S1期73-76,220,共5页Journal of Vibration,Measurement & Diagnosis

基　　金：国家自然科学基金资助项目(51105177);高等学校博士学科点专项科研基金联合资助课题(20113227120015);江苏省高校科研创新计划资助项目(CXZZ12-0663)

摘　　要：为解决电控空气悬架(electric control air suspension,简称ECAS)车身高度切换过程中的振荡及"过充"、"过放"现象,以空气弹簧特性为媒介,与车辆动力学相结合,对车身高度调节系统的进行建模。通过遗传算法优化车身高度调节系统PID的控制参数,提出一种新的积分分离PID控制策略。采用Matlab/Simulink搭建模型并对控制前、后仿真结果进行了对比。结果证明,所设计的控制方法能有效解决以上问题,优化后的车身高度调节系统能显著减少汽车振荡及干扰,操纵稳定性得到改善。To solve the problems of oscillation and overcharge, over-discharge phenomenon in the process of the ride height switching in the electric control air suspension(ECAS), with the characteristic of the air spring as the medium, combined with vehicle dynamics, the ride height adjusting system was modeled. Through the genetic algorithm to optimize the ride height adjusting system PID control parameters, a kind of new integral separation PID control strategy was proposed.The model was built by Matlab/Simulink, and simulation results with and without the control strategy were compared. Results show that the proposed control method can effectively solve the above problems. The optimized ride height adjusting system can significantly reduce the vehicle oscillation and interference, and improve the handling stability.

关 键 词：电控空气悬架 车身高度调节 遗传算法 积分分离PID控制 

分 类 号：U463.33[机械工程—车辆工程]