| 基于小波变换的四轮车辆非平稳振动时频研究 |
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| 引用本文： | 王岩松,耿艾莉,张立军.基于小波变换的四轮车辆非平稳振动时频研究[J].汽车工程,2004,26(2):177-182. |
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| 作者姓名： | 王岩松 耿艾莉 张立军 |
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| 作者单位： | 辽宁工学院,锦州,121001 |
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| 摘 要： | 基于8自由度的车辆动力学模型，以四轮相关滤波白噪声路面为系统输入，对四轮车辆的非平稳随机振动过程进行了计算机时域模拟，进而采用谱分析和小波分析技术分析了系统响应，在时频平面内建立了各振级之间的振动联系，考察了振动能量的流动情况，深入揭示了车辆非平稳振动过程的本质。
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| 关 键 词： | 车辆 动力学模型 小波变换 非平稳振动 时频研究 |
A Study on Nonstationary Vibration in Time-Frequency Domains for Four-Wheel Vehicles Based on Wavelet Transform |
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| Abstract: | Based on a 8 DOFs vehicle dynamic model,the nonstationary random vibration process of a four wheel vehicle is simulated in time domain with a so called four wheel correlated filtered white noise road roughness as system input Then by using the spectral and wavelet analysis techniques,the system responses are analyzed The correlation between different vibration levels is established And the vibration energy flow is also investigated |
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| Keywords: | Wavelet transform Vehicle Nonstationary vibration Time frequency study |
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