【摘要】 建立了非平稳的四轮相关滤波白噪声路面时域模型 ,并用计算机模拟得出四轮的路面不平度时间序列 ,理论验证的结果表明该模型与路面的实际情况非常接近 ,进而采用谱分析、小波分析等数据处理技术对路面信号的时频特征进行了深入的探讨 ,得出了一些有价值的结论。更多还原

【Abstract】 A nonstationary filtered white noise road roughness model in time domain for a four-wheel vehicle is developed in this paper.And the four wheels time series of road roughness are simulated.The results show that the proposed model is more accurate and closer to the real road conditions than the previous ones.Furthermore,several data processing techniques such as spectral analysis,wavelet analysis are used to study the time-frequency characteristics of road signals with some valuable conclusions drawn.更多还原