汽车半主动悬架的多目标优化设计

SEMI-ACTIVE SUSPENSION DESIGNED BY MULTI CRITERIAL OPRIMIZATION METHOD

提出了一种多目标优化设计汽车半主动悬架的方法，以车身加速度和轮胎动力的积分作为优化设计目标，选择阻尼系数、半主动阻尼控制逻辑、采样频率作为优化参数，利用德国宇航院（DLR）开发的控制系统的分析设计软件（ANDECS）对二类半主动阻尼器（即开关型和连续型）进行了研究，以一个受半正弦波激励的四分之一汽车模型为例比较各类被动、半主动和主动悬架的减振效果，证实本设计算法的减振效果。

For overcoming the drawback of the conflict between the ride comfortable and dynamic tire force in semi-active vehicle suspenusion design, the multi-criterions optimization method is pesented The integral of sprung mass s acceleration and max dynamic tire force are selected as optimal design criterions. Besides the damper coeffiient, the semi-active damper control logic and Sampling time are also used as a set of optimall Parameters. Using the program of the analysis design of control systems (ANDECS)developed by German Aerospace Research Establishment(DLR), two dinds ofsemiactive damper(on-off and continuous) are investigated.The quarter-car model excited by a haversine-type bump is used as an example the results of passive semi-active (on-off and continuous) and active damper are compared with each other and effective of the design algorthm are proven.