汽车防抱死制动系统的自寻最优控制.PDF

15 5 V o l15 N o5 20 10 10 JOURNA L O F HAR BIN UN IVER SITY OF SCIENCE AND TE CHNOLOGY O ct. 20 10 李文娟, 付天雷, 陈凤林, 王旭东 ( , 150080 : 针对汽车防抱死制动系统中路况经常变化的特殊性, 提出了将自寻最优控制 略应用 到防抱死控制中. 构建了防抱死制动系统和制动时车辆动力学模型, 设计了依据制动力矩和附着力 矩变化量符号改变来调节制动力矩的自寻最优控制器. 仿真结果验证, 自寻最优控制可以自动搜寻 到最佳滑移率, 并使系统在最佳滑移率附近工作, 达到最佳制动效果. 本文为汽车制动性能的研究 提供了有效可行的防抱死控制 略. : 防抱死制动系统; 自寻最优; 制动力矩 : U4 6352 : A : 1007- 2683( 2010 05- 0027- 04 Selfoptim izing Control ofVehicle Antilock Braking System LI Wenjuan, FU Tianlei, CHEN Fenglin, WANGX udong ( S chool of E lectrical and E lectron ic Eng ineering, H arb in U n ivers ity of Scien ce and T echnology, H arb in 150080, Ch ina Abstract: A mi ed a t the particu larity o f ant ilock brak ing system w ith road cond itions chang ing so frequen t ly, the se lfopt mi iz ing contro l strategy is u sed. The ant ilock brak ing system and dynam ic m odel are bu ilt. T he se lfopt mi iz ing con tro ller is designed. It ad ju sts b rak ing to rques acco rding to sign changes o f variat ions in bra k ing to rques and adhesive torques. S mi u lat ion resu lts verify tha t the selfoptmi iz ing con trol can search the op ti m al sliding rate au tom atica lly, m ake the system operate around slid ing rate and there fore the brak ing effect is the best. T h is paper prov ides an e ffective antilock braking contro l strategy for study ing veh icle brak ing per form ances. K ey words: antilock brak ing system; selfopt mi izing; braking torque [ 2] 0 引 言