考虑EPS与ESP耦合作用的ECAS系统控制策略  

Control Strategy for Electronically Controlled Air Suspension System with Consideration of the Coupling Between EPS and ESP

作　　者：陈黎卿[1] 郑爽[1] 曹恺[1] 

机构地区：[1]安徽农业大学工学院,合肥230036

出　　处：《汽车工程》2017年第11期1261-1267,共7页Automotive Engineering

基　　金：国家自然科学基金(51305004)资助

摘　　要：为提升汽车在不同工况下的行驶平顺性,提出了一种考虑电动助力转向系统与汽车电子稳定系统耦合作用的电控空气悬架(ECAS)控制策略。首先建立基于Matlab/Simulink的10自由度整车模型,分析了ESP和EPS对ECAS平顺性的影响规律;接着设计了基于粒子群算法的电控空气悬架系统PID控制器;最后搭建了基于NI-PXI实时控制器的电控空气悬架控制器硬件在环试验平台。试验结果表明:在路面附着系数0.7、车速50km/h下的单移线工况下,与无控制时相比,所提出的控制系统使整车侧倾角峰值由0.031rad降低到0.021rad,俯仰角峰值降低了16%,质心垂向加速度均方根值也减小了32.91%。For improving the ride comfort of vehicle under various operating conditions,a control strategy for electrically-controlled air suspension（ECAS） is proposed with consideration of the coupling of electric power steering system and electronic stability system.Firstly,a 10 DOF vehicle model is set up with Matlab/Simulink,and the effects of ESP and EPS on the ride comfort of ECAS is analyzed.Then,a PID controller of ECAS is designed based on particle swarm algorithm.Finally,a hardware-in-the-loop test platform for ECAS controller is built based on NI-PXI real-time controller.The test results show that under a road adhesion coefficient of 0.7 and a vehicle speed of 50 km/h,the control system proposed can reduce the peak roll angle from 0.031 rad to 0.021 rad,with the peak pitching angle and the mean square root of vertical acceleration of mass center lowering by 16% and 32.91% respectively,compared with that without control.

关 键 词：电控空气悬架 耦合 粒子群优化算法 硬件在环试验 

分 类 号：U463[机械工程—车辆工程]