Road irregularity, as a stationary stochastic process, is generally illustrated by the power spectral density (PSD) in frequency domain. Based on the frequency models, three time domain models of to the unevenness excitation to vehicles from road surfaces were presented in accordance with the standard or measured road PSD. The properties of the resulting models were theoretically discussed and mathematically realized. Finally, the further research topics were given in the paper.
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张永林,钟毅芳.车辆路面不平度输入的随机激励时域模型[J].农业机械学报,2004,35(2):9-12. Zhang Yonglin Zhong Yifang. Time Domain Model of Road Undulation Excitation to Vehicles[J]. Transactions of the Chinese Society for Agricultural Machinery,2004,35(2):9-12.