汽车真空辅助制动系统的控制研究
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摘要
以汽车真空辅助制动系统为研究对象,重点对其控制系统进行了设计研究.利用模糊模式识别法对驾驶员的制动意图进行了辨识,将制动意图分为平稳制动、调节制动和紧急制动.仿真结果表明:模糊模式识别法可有效完成对驾驶员制动意识的辨识.分析了空气流速对制动吸盘下落时间的影响,采用理论推导方式获得了真空系统开启时刻控制方程式,并利用实验对该方程式进行了经验修正.控制系统关键技术的实现,为汽车真空辅助制动系统的应用奠定了良好基础.
The control system have been designed for the vehicle vacuum auxiliary braking system in the paper.The braking intentions is divided into three kinds:the smooth braking,the adjusting braking and the emergency braking,they are recognized by the fuzzy pattern recognition method.The simulation result shows that the fuzzy pattern recognition model can accurately recognize the braking intentions.The control formula of the vacuum system'start-up time is deduced after analyzing how the airflow affects to the falldown time of auxiliary braking sucking disc,and the control formula is revised through experimental study.The realization of the two key technology lay a foundation for the application of the vacuum auxiliary braking system.
The control system have been designed for the vehicle vacuum auxiliary braking system in the paper.The braking intentions is divided into three kinds:the smooth braking,the adjusting braking and the emergency braking,they are recognized by the fuzzy pattern recognition method.The simulation result shows that the fuzzy pattern recognition model can accurately recognize the braking intentions.The control formula of the vacuum system'start-up time is deduced after analyzing how the airflow affects to the falldown time of auxiliary braking sucking disc,and the control formula is revised through experimental study.The realization of the two key technology lay a foundation for the application of the vacuum auxiliary braking system.
引文
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[2]JEPPSSON H,STLING M,LUBBE N.Real life safety benets of increasing brake deceleration in car-to-pedestrian accidents:simulation of vacuum emergency braking[J].Accident Analysis and Prevention,2018,111(2):311-320.
[3]刘树伟,郭立新,郝亮.汽车真空辅助制动系统的设计与研究[J].中国机械工程,2015,26(13):1840-1845.LIU S W,GUO L X,HAO L.Design and research of automotive vacuum auxiliary braking system[J].China Mechanical Engineering,2015,26(13):1840-1845.
[4]辽宁工业大学.汽车辅助制动系统:中国zl201310150996.x2[P].2015-10-21.Liaoning University of Technology.Automobile auxiliary braking system:China zl201310150996.x2[P].2015-10-21.
[5]BOER E R,WARD N J,YAMAMURAT,et al.Driver performance assessment with a car following model[C]∥Proceedings of the 3rd International Symposium on Human Factors in DriverAssessment,Training,and Vehicle Design.2005:433-440.
[6]王英范,宁国宝,余卓平.乘用车驾驶员制动意图识别参数的选择[J].汽车工程,2011,33(3):213-217.WANG Y F,NING G B,YU Z P.Parameter selection for the identification of driver’s braking intention for passenger car[J].Automotive Engineering,2011,33(3):213-217.
[7]ZHAO G Y,PENG C Y,WANG X T.Intelligent control for AMT based on driver,intention and ANFIS decision-making[C]∥Proceedings of the 7th World Congress on Intelligent Control and Automation,Chongqing,China.2008:1-6.
[8]陆志良.空气动力学[M].北京:北京航空航天大学出版社,2009.LU Z L.Aerodynamics[M].Beijing:Beihang University Press,2009.