汽车主动悬架与ABS系统联合控制研究

文章建立了7自由度的半车模型、液压制动模型及白噪声路面模型,基于实用的PID控制器,将汽车主动悬架与ABS系统进行了联合控制。悬架控制系统既以改善悬架性能为调节目标,又以车轮滑移率在最优时车轮法向反力达最优为调节目标;ABS系统以车轮滑移率达最优,制动性能提高为调节目标。仿真实验表明,在联合控制情况下,汽车悬架的性能指标、制动性能较之两系统单独控制的情况均有明显改善与提高。

Research on the conjoint control of the vehicle's active suspension and anti-lock braking system

In the paper,the semi-vehicle model of seven degrees of freedom,the hydraulic braking model and the white-noise road surface model are founded,and based on the practical PID controller,the conjoint control of the vehicle's active-suspension and anti-lock braking system(ABS)is achieved.The adjusting of the suspension control system aims at improving suspension performance as well as getting the optimal normal counter force of the wheel as the sliding rate of the wheel is at its best.The adjusting of the ABS aims at getting the optimal sliding rate of the wheel and advancing braking performance.Simulation experiments show that under the conjoint control,both the suspension performance indexes and the braking performance of the vehicle have evident improvements in comparison with the single control of the two systems.