摘要
建立了1/2车4自由度主动悬架的T-S模糊模型,提出了基于该模型的悬架模糊H∞控制器设计方案。考虑系统部分状态不能直接量测的情况,设计了状态观测器,并应用线性矩阵不等式方法求出了模糊控制律。所设计的模糊控制器,使得闭环模糊系统全局渐近稳定,并获得了H∞控制性能。仿真结果表明所设计的主动悬架与被动悬架相比,系统能快速稳定,其舒适性和平顺性也得到了显著改善。
The T-S fuzzy model of 4 degrees of freedom active suspension of a half-automotive is established, and a suspension fuzzy H∞ controller is proposed based on the model. Considering some states which can not be measured, a state observer is designed and the fuzzy control laws are obtained by solving the linear matrix inequalities (LMIs). The closed-loop fuzzy system achieves global asymptotic stability by the fuzzy controller presented, and H∞ control performance is also gained. The simulation shows that the system can approach to the stable state rather fast, the ride performance and safety of automotive are effectively improved.
出处
《振动与冲击》
EI
CSCD
北大核心
2007年第11期64-69,共6页
Journal of Vibration and Shock
基金
国家留学基金(2004813033)
