空气主动悬架模糊控制仿真与实验研究

摘要

建立了1/4车体二自由度的空气主动悬架模型,设计了用于该主动空气悬架的模糊控制器,应用Matlab/Simulink控制系统仿真软件,对1/4汽车空气主动悬架模型进行计算机仿真.仿真结果表明具有此模糊控制器的空气主动悬架在提高车辆乘坐的舒适性和操纵的稳定性方面明显优于空气被动悬架.在此基础上,设计了空气主动悬架台架实验,进行了空气被动悬架与空气主动悬架的台架对比实验.由实验结果可以看出,与空气被动悬架相比,空气主动悬架能有效改善车辆性能,与仿真研究结果具有一致性.%The two-degree of freedom pneumatic active suspension model for a quarter of vehicle is built up,then the designing way of automobile pneumatic active suspension with fuzzy controller is introduced in fuzzy system.The comparison study through simulation by using Matlab/Simulink shows that the performance of pneumatic active suspension with fuzzy controller is better than that of pneumatic passive suspension. Meanwhile ,contrastive experiment of pneumatic active snspension and pneumatic passive suspension has carried out. The results show that the pneumatic active suspension improves the characteristics of the dynamic capability. It is identical to the simulation result.