液力缓速器恒速控制策略的仿真研究  

Simulation Research on Constant Speed Control Strategy of Hydraulic Retarder

作　　者：陆中华[1] 程秀生[1] 

机构地区：[1]吉林大学

出　　处：《汽车技术》2009年第11期1-3,共3页Automobile Technology

基　　金：吉林省科技发展计划(项目编号为20050317-1)

摘　　要：简述了液力缓速器工作原理,并给出了所研究液力缓速器台架试验得到的转子转速与制动扭矩之间关系曲线。利用Matlab软件建立了车辆恒速下坡制动模型,通过仿真对比了控制周期、充液量初始值和每个控制周期内充液量变化值等参数对恒速控制效果的影响。根据液力缓速器控制参数的仿真结果,选定各参数最佳值进行了实车道路试验。结果表明,仿真得到的恒速控制策略应用到实际控制中是有效的。Operating principle of hydraulic retarder is briefed in the paper, and the relationship curve is given between rotor speed and braking torque obtained from bench test of the hydraulic retarder. A braking model of the vehicle driving downgrade with constant speed is established with Matlab software, and then the effect of parameters like control cycle, initial liquid charge and variation of liquid charge in each control cycle, etc. on constant speed control effect is analyzed with simulation. Road test is carried out with the optimal parameters selected in accordance with the simulation results of the control parameters of the hydraulic retarder. The test results show that the constant speed control strategy is effective in actual control operation.

关 键 词：液力缓速器 恒速控制策略 仿真 

分 类 号：U463.5[机械工程—车辆工程]