主动悬架系统对汽车侧翻稳定性改善分析

针对被动悬架系统侧翻稳定性比较差的问题,提出采用主动悬架系统的方法进行改善。通过汽车侧倾运动状态分析,建立了被动悬架系统、主动悬架系统和控制系统模型。模拟分析得到主动悬架系统使得汽车在弯道行驶时的侧倾角有效值下降了92.8%,侧倾角加速度有效值下降了78.2%,侧翻因子有效值下降了92.6%。结果表明:利用主动悬架系统可以有效地降低汽车非直线行驶时的侧倾角以及侧倾角加速度,提高汽车的侧翻稳定性,是提高汽车非直线行驶状态下安全性的一个合理的解决方案。

Analysis of improvement on automobile side tumbling stability with active suspension system

Authors put forward the active suspension system(ASS) to replace the passive suspension system with poor side tumbling stability,and through the roll motion analysis,establish the model of passive suspension system,ASS and the control system.Through the simulation and analysis,the effective roll angle of vehicle with ASS decrease by 92.8% in curve driving at high speeds,and the effective roll angle acceleration and side tumbling factor decrease by 78.2% and 92.6% respectively.The results show that the ASS can effectively reduce the roll angle and roll angle acceleration in non-linear driving and improve the side tumbling stability.ASS is a reasonable solution to improve vehicle safety in non-linear driving.