汽车路面激励的时域建模与仿真  

Modeling and Simulation of Road Surface Excitation on Vehicle in Time Domain

作　　者：卢凡[1,2] 陈思忠[1] 

机构地区：[1]北京理工大学机械与车辆学院,北京100081 [2]中国航天空气动力技术研究院,北京100074

出　　处：《汽车工程》2015年第5期549-553,共5页Automotive Engineering

摘　　要：在考虑左右轮迹相干性的基础上,采用滤波白噪声法建立了四轮汽车的路面激励时域模型。在不同路面和汽车参数的工况下进行了仿真,生成了汽车路面激励时域信号。仿真结果表明,该方法建立的路面激励时域模型的功率谱密度和左右轮迹相干函数与参考模型基本一致。与其它方法相比,该模型可行有效、通用性好、易于计算。With consideration of the coherence between left and right tracks, a time domain model for the road surface excitation on four-wheel vehicle is established by using filtered white noise method. Simulations are conducted in different vehicle parameters and road surface conditions with the time-domain signals of road surface excitation on vehicle generated. Simulation results show that the power spectral density and the coherence function between left and right tracks obtained with proposed model are in conformity with the ones with the reference model, and compared with other schemes, the proposed model is valid, feasible and universal with low computation cost.

关 键 词：路面激励 时域模型 滤波白噪声 相干性 

分 类 号：U461.5[机械工程—车辆工程]