CAJ | 학술논문

通过建立十自由度车辆动力学模型,对汽车平顺性进行分析.运用振动理论分析了车辆的传递函数和振动特性,并通过讨论选择了车身质心加速度、悬架动挠度、车轮相对动载荷、车身俯仰角加速度等参量作为平顺性评价标准.通过Matlab/Simulink对车辆振动特性进行仿真,讨论了轮胎刚度和动力总成悬置刚度对平顺性的影响.结果表明,两者的增加均导致汽车平顺性变差.通过仿真实例可见,该动力学模型可利用设计初期的车辆参数对汽车平顺性进行预测和评估,从而减少样车开发成本.
통과건립십자유도차량동역학모형,대기차평순성진행분석.운용진동이론분석료차량적전체함수화진동특성,병통과토론선택료차신질심가속도、현가동뇨도、차륜상대동재하、차신부앙각가속도등삼량작위평순성평개표준.통과Matlab/Simulink대차량진동특성진행방진,토론료륜태강도화동력총성현치강도대평순성적영향.결과표명,량자적증가균도치기차평순성변차.통과방진실례가견,해동역학모형가이용설계초기적차량삼수대기차평순성진행예측화평고,종이감소양차개발성본.
Vehicle ride comfort was analyzed on the vibration theory by establishing a ten DOFs dynamic model.Through discussing the vibration characteristics of the vehicle system,parameters,including vehicle centroidal acceleration,suspension dynamic deflection,relative wheel dynamic load and pitch angular acceleration,were chosen as targets to evaluate vehicle ride comfort.Influences on the ride comfort by vehicle parameters were studied through the simulation by Matlab/Simulink,which shows the increase of tire and mount stiffness both lead to bad ride comfort.As a result,with the vehicle dynamic model and simulation method,vehicle ride quality can be predicted and evaluated in product design.