汽车平顺性匹配的动力学模型的研究  

Dynamic Model Study Applied to Matching of Automobile Comfort

作　　者：张国胜[1] 方宗德[1] 陈善志[1] 李爱民[1] 颜克志[1] 

机构地区：[1]西北工业大学机电学院,陕西西安710072

出　　处：《系统仿真学报》2008年第5期1321-1324,1371,共5页Journal of System Simulation

摘　　要：建立了应用于汽车平顺性匹配的动力学模型,该模型包括了匹配设计的结构参数及物理参数。采用了路面不平度的白噪声激励模拟方法,给出了白噪声路面输入的状态方程。设计了一套通用的模型演化流程,可以根据设计要求得到不同自由度的汽车振动模型。通过汽车平顺性的仿真试验,分别从频域和时域两个角度进行了汽车纵向角加速度和乘客的垂向加速度性能的单变量变参数分析,初步获得设计参数和平顺性能的基本关系。An eight degrees of freedom automobile dynamical model was presented, which included the structure parameters and physics parameters for the comfort matching study. A road white noise simulation method based on the power function was adopted and the state equation for road input simulation was given, An evolvement method for several degrees of freedom automobile comfort models was put forward for the need of different automobile comfort design studies. The simulation tests of the longitudinal angle acceleration of the automobile and vertical acceleration of the passenger were carried out using the variable parameters analysis method in frequency domain and time domain respectively. The test results give the basic relation between design parameters and comfort performances and the next task is to carry through the parameter sensitivity analysis and the matching of automobile comfort with several design variables.

关 键 词：汽车 平顺性 匹配 动力学 仿真 

分 类 号：U461[机械工程—车辆工程]