基于改善俯仰与垂直复合振动的空气悬架系统多目标优化设计

Multi-objective Method for Improving Performance of Pitch and vertical Composite Vibration of Air Suspension

基于研究汽车俯仰与垂直的复合振动,建立了空气悬架客车的双轴汽车模型。对于路面谱的构造和功率谱密度(PSD)的计算进行了研究。以降低车身俯仰角运动和质心处的垂直振动为目标,以减震器的阻尼力作为优化参数,建立多目标的优化过程。通过应用多目标规划优化方法对前后悬架系统参数进行优化和匹配计算,达到改善车辆的俯仰与垂直复合振动的性能。

Using the double axis automobile＇ model of a bus with air--suspension to search on car＇s performation of Pitch and vertical＇composite vibration. Then searched for structure of pavement spectrum and power spectral density. Using reducing the body＇ s pitching and vertical vibration as optimization objection arget and using damping force of shock absorber as optimization target match,establishment muti-objective＇s optimization process. According to useing optimize the parameters of pre--and--post suspensions with multi--objective method for improving the performation of pitch and vertical＇composite vibration.