基于滑移率试探的电动车辆制动控制策略  

Electric vehicle braking control based on a slip ratio trial method

作　　者：周磊[1] 罗禹贡[1] 杨殿阁[1] 李克强[1] 连小珉[1] 

机构地区：[1]清华大学汽车安全与节能国家重点实验室,北京100084

出　　处：《清华大学学报（自然科学版）》2008年第5期883-887,共5页Journal of Tsinghua University(Science and Technology)

基　　金：国家"八六三"高技术项目(2006AA11A108)

摘　　要：分析了电驱动车辆制动控制中能量回馈与制动稳定性之间的矛盾,提出了一种兼顾制动回馈控制及车轮防抱死控制的基于滑移率试探的电动汽车制动控制策略。在制动过程中根据滑移率是否在稳定区域,实时控制电机制动力与液压制动力,在保证制动稳定性的同时提高制动能量回收能力。该控制策略不依赖于路面辨识、制动力估计等复杂算法。在不同制动工况下的仿真结果表明:采用该策略能获得接近最优的制动回馈效率,并在大制动力工况中实现了车轮的防抱死控制。Regenerative braking control and vehicle stability control were integrated into an electric vehicle braking control strategy using a slip ratio trial method to eliminate the conflict between energy recovery and braking stability in electric vehicle braking control. The regenerative brake torque and the friction brake torque are coordinated according to whether the driving wheel slip ratio is in the stable region to improve brake energy recycling while maintaining brake stability. The strategy is independent of road conditions or longitudinal braking force estimates. Simulations for various braking conditions show that the strategy gives almost the optimal regenerative braking efficiency and regulates the tire slip within the stable region for abrupt braking conditions.

关 键 词：电动汽车 制动能量回馈 控制策略 模糊控制 

分 类 号：U469.7[机械工程—车辆工程]