汽车恒速下坡用水液力缓速器控制策略研究  

Strategy Research on Car's Constant Speed Downhill Controlled by Water Hydraulic Retarder

作　　者：李淑梅[1] 罗卫东[1] 柳慧谱 

机构地区：[1]贵州大学机械工程学院,贵阳550025

出　　处：《计算机测量与控制》2015年第3期777-779,共3页Computer Measurement &Control

基　　金：贵州大学研究生创新基金项目(研理工2014024);贵阳市科技局项目;筑科合同(2011101)1-27号;贵阳市科技计划项目;筑科合同(2012207)04号

摘　　要：在分析了水液力缓速器控制系统结构原理及汽车恒速下坡过程的基础上,提出了一种水液力缓速器控制汽车恒速下坡的参数自整定模糊控制策略;根据水液力缓速器系统数学模型和整车制动动力学模型,在Matlab/Simulink中建立了汽车恒速下坡动力学仿真模型;对某型货车在最高档以不同初速度下坡进行仿真分析,并对比模糊控制策略,仿真结果表明参数自整定模糊控制策略明显改善了水液力缓速器恒速控制系统的动态和静态特性,使其具有超调量小、动态响应快等优点。Based on the structural principles of water hydraulic retarder control system, with the analysis of car＇ s constant speed downhill process, the parameter self--adjusting fuzzy control strategy is proposed. According to the mathematical model of water hydraulic retarder system and the braking dynamic model, the simulation model of car＇ s constant speed downhill process is established in Matlab/Simulink. For a certain type of truck under the top gear, its downhill at different initial speeds are simulated analyzed, and compared to the conventional fuzzy control. Simulation results show that the parameter self--adjusting fuzzy control strategy can improve the dynamic and static characteristics of water hydraulic retarder constant speed control system, having smaller overshoot and faster dynamic response.

关 键 词：水液力缓速器 恒速下坡 模糊控制 参数自整定 仿真 

分 类 号：U492.6[交通运输工程—交通运输规划与管理]