磁流变半主动悬架研究及实车试验分析

针对车辆半主动悬架系统的整车协调控制,通过悬架动力学模型分析了耦合量的影响,提出了一种主从控制方法。基于自行研制的并联常通孔式磁流变减振器和控制系统开展了实车道路试验。在越野路行驶时,驾驶员坐垫处的加权加速度降低了13.8%~42.6%,车身俯仰角速度降低了21.1%~53.7%;蛇行试验中车身侧倾角速度、角度分别平均降低了65%和38.5%;变道试验中车身侧倾角速度、角度分别平均下降65%和51%。综上所述,研制的磁流变悬架系统显著地提升了车辆的乘坐舒适性、操纵稳定性和行驶安全性。

Research and Performance Test of Magnetorheological Semi?Active Suspension System Based on a Real Vehicle

For coordinated control of vehicle for semi?active suspension system,a master?slave control strategy is proposed by analyzing the coupling influence through suspension dynamic model.The road test is carried out based on a real vehicle equipped with the self?developed electronic control unit(ECU)as well as magnetorheo?logical(MR)dampers paralleling with constant throttling orifices.The off?road test indicates that the weighted accel?eration of the driver seat and the pitching rate are reduced by 13.8%~42.6%and 21.1%~53.7%respectively;In the slalom test,the rolling rate and angle are reduced by 65%and 38.5%respectively.In the double lane?change test,the rolling rate and angle are reduced by 65%and 51%respectively.In conclusion,the developed MR suspension system can improve the riding comfort,handling stability and driving safety significantly.