汽车座椅和悬架系统舒适性结构优化设计

Structure Optimization Design of Comfort for Automobile Seat and Suspension System

针对优化座椅和悬架系统舒适性算法单一、效率低的问题,提出了一种ISIGHT的Pointer组合型多目标优化方法。以驾驶员座椅和悬架系统为研究对象,建立1/2汽车5自由度振动模型,把驾驶员垂直方向的加速度均方根值和车身质心处的俯仰角加速度均方根值作为优化目标,运用将不同优化算法组合的方法对驾驶员座椅和悬架系统进行优化,并对参数与目标函数的相关性进行分析。优化结果表明,所提方法可对较复杂的汽车座椅和悬架系统结构参数进行优化,并获得最优解集,从而有效改善汽车的行驶平顺性及驾驶员的驾驶舒适性,且通过相关性分析为悬架及驾驶员座椅系统设计提供参考。

Aiming at the problem of single algorithm and low efficiency of seat and suspension system optimiza- tion, a multi-objective optimization method is proposed based on ISIGHT of Pointer. Taking the driver＇s seat and sus- pension system as the research object, a haft-car 5 degree-of-freedom model was established. The optimization ob- jectives were established with root mean square values of seat acceleration and pitch angular-acceleration. The Point- er algorithm was used to optimize the driver＇s seat and suspension system. The correlation between the parameter and optimization objective was discussed. The test results show that the proposed optimization approach can be used to op- timize the structural parameters of the driver＇s seat and the suspension system, and obtain the Pareto optimal solu- tions, so as to effectively improve the ride comfort of the vehicle and the driving comfort. And some reference is pro- vided for the suspension and the driver＇s seat system design through the analysis of correlation.