基于CarSim和MATLAB的电子限滑差速器控制策略研究  

Research on Electronic Limited Slip Differential Control Strategy Based on CarSim and MATLAB

作　　者：肖峻[1] 赵志强[1] 刘志柱 谢锡春 贺征 Xiao Jun;Zhao Zhiqiang;Liu Zhizhu;Xie Xichun;He Zheng(Wuhan University of Technology,Wuhan 430070;Dongfeng Off-road Vehicle Co.,Ltd.,Wuhan 430056)

机构地区：[1]武汉理工大学,武汉430070 [2]东风越野车有限公司,武汉430056

出　　处：《汽车技术》2021年第8期36-44,共9页Automobile Technology

基　　金：国家自然科学基金项目(51975436)。

摘　　要：为研究适用于电子限滑差速器(ELSD)的控制策略,以某款装配ELSD的对标车为基础,利用整车CAN信号测试工具获取关键参数并分析得到初步的控制规律,基于台架试验数据和液压理论,建立了ELSD数学模型并对对标车的控制规律进行优化,提出了基于阈值、模糊和PID控制方法的协调控制策略,并利用CarSim/Simulink开展联合仿真验证,结果表明,该控制策略能够充分利用ELSD主动限滑的特点,改善车辆动态性能。In order to study the control strategy applicable to Electronic Limited-Slip Differential(ELSD),benchmarking car with ELSD is taken as an example,vehicle’s CAN signal test tools are used to obtain key parameters,and obtain the preliminary control law by analyzing these parameters.Based on bench test data and hydraulic theory,mathematical model of ELSD is established and to optimize the control law of the benchmarked vehicle,further a coordinated control strategy based on threshold,fuzzy and PID control methods is proposed.Finally,the CarSim/Simulink co-simulation method are utilized for simulation verification.The results show that using this control strategy can make full use of the ELSD’s active limited slip feature and improve the dynamic performance of the vehicle.

关 键 词：电子限滑差速器 数学模型 协调控制 

分 类 号：U461.2[机械工程—车辆工程] U461.3[交通运输工程—载运工具运用工程]