中文摘要：

基于热力学与车辆动力学理论,建立了带可调容积附加气室空气悬架的数学模型;以提高车辆行驶平顺性、轮胎接地性和操纵稳定性为目标,附加气室容积与减振器阻尼系数为设计变量,建立附加气室空气悬架的多目标优化模型;接着采用线性加权和法,将多目标优化问题转化为单目标优化问题;最后整合车辆典型工况下的优化结果,以载荷、车速及路面等级为控制输入量,采用决策控制实现可调容积附加气室空气悬架的半主动控制。结果表明,基于参数优化结果的决策控制能有效提高悬架的综合性能,降低车身加速度和悬架动行程,但轮胎动载荷略有增加。

英文摘要：

A mathematical model for the air suspension with adjustable auxiliary chamber is developed based on thermal dynamics and vehicle dynamic theories,and a multi-objective optimization model for air suspension with auxiliary chamber is constructed with enhancing the ride comfort,tire grip and handling stability of vehicle as objectives and the volume of auxiliary chamber and the damping coefficient of shock absorber as design variables.Then the multi-objective optimization model is converted to single-objective optimization model by using linear weighting method.Finally,the results of optimizations in typical conditions are integrated,and with loads,road grades and vehicle speeds as control input,decision-making control is adopted to achieve the semi-active control of air suspension with adjustable auxiliary chamber.The results show that the decision-making control based on optimized parameters can effectively enhance the overall performance of suspension,reduce vehicle body acceleration and suspension dynamic travel with slightly increased tire dynamic load.