半主动悬架支撑下1/4车的平顺性研究  

Study on Ride of 1/4 Car Model Supported by Semi-active Suspension

作　　者：李同杰[1] 陈杰平[1] 

机构地区：[1]安徽科技学院机电与车辆工程学院,安徽凤阳233100

出　　处：《安徽科技学院学报》2012年第1期51-55,共5页Journal of Anhui Science and Technology University

基　　金：安徽科技学院省自然科学基金预研项目(ZRC2012314);安徽省高校省级优秀青年人才基金项目(2012SQRL139)

摘　　要：建立了半主动悬架支撑下1/4车的振动模型,推导了其运动微分方程,运用matlab/simulink工具箱模拟了汽车在40m/s和100m/s两种工况作用下B级路面的随机激励,并编写了1/4车模型在随机激励作用下频域响应求解的仿真框图程序。结果表明,带有PID控制器的半主动悬架与被动悬架相比,明显地降低了车身加速度,即明显改善了汽车平顺性:在时速为40m/s时,车体的振动能量峰值减少了69.8%;在时速为100m/s时,车体的振动能量峰值减少了65.5%;相较于高速工况下,半主动悬架在车速为中低速时,对于平顺性的改善的作用更加明显。A 1/4 Car Model supported by semi-active suspension is established and the differential equations of motion are derived.The random exciting force about the road of B-class is simulated by using matlab/simulink in two kinds of conditions,at speed of 40m/s and 100m/s.The numerical simulink program of the system is accomplished.The results show that 1/4 car model supported by semi-active suspension is superior to the same model supported by passive suspension;The effect of improving ride of a car with semi-active suspension at law speed is superior to high speed condition

关 键 词：半主动悬架 1/4车模型 平顺性 

分 类 号：TH132.425[机械工程—机械制造及自动化]