摘要
针对磁悬浮球系统的非线性和不稳定性,将模糊控制与传统的滑模控制相结合,设计出结合二者优点的模糊滑模控制器。给出磁悬浮球系统的数学模型与模糊滑模控制器的具体设计方法。仿真结果表明,与传统的滑模控制算法及PID控制算法相比,模糊滑模控制能明显地削弱系统的抖振,并具有良好的动态性和鲁棒性,还能满足磁悬浮系统的实时性要求。
Referring to the nonlinear and unstable characters of the magnetic ball levitation system , a fuzzy sliding mode control approach is designed as a nonlinear controler . This controller combines advantages of the traditonal sliding mode controller and fuzzy controller. The mathematics model of the system and the concrete design methods are presented. Simulation results show that the proposed strategy exhibits better control than that of traditional sliding mode control and PID control. Fuzzy sliding mode can considerably weaken the chattering of control system, make the system exhibits better dynamic characteristics and robustness , and also meets the real-time control requirement of magnetic ball levitation system.
出处
《航空兵器》
2008年第5期25-29,共5页
Aero Weaponry
关键词
滑模控制
模糊控制
磁悬浮
抖振削弱
sliding mode control
fuzzy control
magnetic levitation system
chatter reduction
