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車(chē)輛路面不平度輸入的隨機(jī)激勵(lì)時(shí)域模型
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Time Domain Model of Road Undulation Excitation to Vehicles
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    摘要:

    作為隨機(jī)過(guò)程的車(chē)輛道路不平度高程,,通用的模擬方法是頻域模型——道路不平度功率譜密度(PSD)。但在對(duì)人一車(chē)一路系統(tǒng)進(jìn)行非線性或耦合動(dòng)力學(xué)分析研究時(shí),必須獲得關(guān)于道路的時(shí)域模型,。由等級(jí)道路的標(biāo)準(zhǔn)譜或?qū)崪y(cè)道路的估計(jì)譜反求道路時(shí)域模型具有重要的理論意義和實(shí)用價(jià)值,。本文基于道路PSD,,描述了幾種基于路面功率譜模型的道路時(shí)域模型重構(gòu)方法,,闡述了時(shí)域建模的原理,、特點(diǎn)和適用范圍,,給出了其數(shù)學(xué)上的實(shí)現(xiàn)過(guò)程,。最后,,指出了道路時(shí)域建模進(jìn)一步研究的方向。

    Abstract:

    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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張永林,鐘毅芳.車(chē)輛路面不平度輸入的隨機(jī)激勵(lì)時(shí)域模型[J].農(nóng)業(yè)機(jī)械學(xué)報(bào),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.

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