摘要
时域路面不平度建模对道路汽车振动时程分析、汽车台架试验、车路耦合动力学分析等均具有重要意义.采用M-FileS-函数编程的方法来实现时域路面不平度的线性滤波和谐波叠加模拟生成,使用M-FileS-函数可方便地更改参数(路面不平度等级和车速),并可被Simulink直接调用.仿真结果表明,线性滤波法和谐波叠加法均能在谱一致准则下生成不同路面及车速下的时域路面不平度,但谐波叠加法的效果和精度优于线性滤波法.
The road roughness model is crucial to vehicle vibration analysis, platform testing and dynamical analysis. The M-File S-function is then employed for both linear filtering and harmonic superposition of time-domain road roughness. In this way, such parameters as roughness rank and vehicle speed can be easily adjusted and directly called by Simulink TM. Based on the notion of spectral consistency, either method of linear filtering or harmonic superposition could generate the time-domain road roughness in terms of different road conditions and vehicle speeds. It is further elaborated that harmonic superposition method outperforms linear filtering method on account of simulation effects and precisions.
出处
《中国工程机械学报》
2006年第4期379-384,共6页
Chinese Journal of Construction Machinery
基金
浙江省重大科技攻关基金资助项目(2004C11029)
