基于汽车悬架的多目标优化方法的研究

Study on multi-objective optimization of vehicle suspension

为了解决汽车悬架的平顺性和操稳性相互耦合的问题,根据万向集团提供的W1车型的相关数据,利用多体动力学仿真软件Adams/car对海马W1车型进行了整车建模,并对该车型进行了平顺性和操稳性仿真。根据国标的评价指标对海马W1车型进行了评价,从而得到汽车平顺性和操稳性的初始性能水平。利用多学科优化软件iSight-FD和多体动力学仿真软件Adams/car进行了联合优化,采用多岛遗传法对评价汽车平顺性和操稳性的性能指标进行优化。优化结果表明汽车的平顺性和操稳性都得到不同程度的提高。评价汽车性能的多目标得到平衡和优化,从而有效的解决了汽车的平顺性和操稳性之间的矛盾。

In order to solve the coupling problem of the ride and the stability,according to relevant data of W1 car＇s model for the Wanxiang company provides,modeling the Haima W1 car was done by using multi-body dynamics simulation software Adams/car,and then the vehicle model car was used for the ride and the stability simulation,the Haima W1 car was evaluated according to ISO evaluation standard,and the car＇s initial performance level of ride and stability was gotten.The multi-objective optimization software iSight-FD and multi-body dynamics simulation software Adams/car were used to joint optimization,the evaluation standard of the ride and the stability of the car was optimized by using the island of genetic algorithms,The optimization results shows that the ride and the stability are improved of the car.Multi-objective optimization of evaluation the performance of the car is balanced and optimizated,then effectively solved the contradictions problem between the ride and the stability of the car.