重型AT换挡品质仿真研究  

Simulation Study of Heavy-Duty AT Shift Quality

作　　者：朱海天[1] 李红勋 孟祥德 赵子涵[1] 

机构地区：[1]军事交通学院研究生管理大队,天津300161 [2]军事交通学院国家应急交通运输装备工程技术研究中心,天津300161

出　　处：《军事交通学院学报》2016年第6期32-36,共5页Journal of Military Transportation University

基　　金：国家高技术发展计划(863计划)项目(2012AA112101)

摘　　要：利用AMESim软件和Matlab/Simulink软件建立某重型AT油压控制系统和整车的联合模型,分析单位阶跃和单位斜坡这两种典型PWM控制信号占空比下车辆的动力学参数和离合器充放油规律。选取二挡升三挡过程,分析离合器充放油规律。引入换挡质量参数作为换挡品质的评价指标,对油压参数进行优化设计。仿真结果表明,采用优化后油压规律控制的换挡过程,车辆冲击度较优化前减小28.11%,离合器的滑磨功率数值较为合理,车辆的换挡品质得到有效改善。On the base of AMESim and Matlab / Simulink,a combined simulation model of automatic hydraulic transmission oil pressure control system and vehicle is established,the dynamic parameters of the vehicle and the variation rules of oil pressure under two typical PWM control signals are analyzed. Taking shifting process of the second gear upshift to third gear as an example,the rules of clutch filling and discharging are analyzed. The design of the oil pressure parameters is optimized by using shift quality parameters to evaluate shift quality. The simulation results show that during the optimized shift process,the degree of shock is reduced by 28. 11%,the friction power is reasonable,and heavy-duty AT shift quality is improved.

关 键 词：重型AT 换挡品质 优化控制 

分 类 号：U463.22[机械工程—车辆工程]