光电层合圆柱薄壳的自组织模糊主动振动控制  

Self-organizing fuzzy active vibration control for photoelectric laminated thin cylindrical shells

作　　者：贺容波[1,2] 郑世杰[1] 

机构地区：[1]南京航空航天大学机械结构力学及控制国家重点实验室,南京210016 [2]安徽工业大学电气信息学院,安徽马鞍山243002

出　　处：《振动与冲击》2013年第21期112-118,共7页Journal of Vibration and Shock

基　　金：国家自然科学基金面上项目(11172129;10872090);南京航空航天大学基本科研业务费专项科研项目(NJ2010011);江苏高校优势学科建设工程资助项目

摘　　要：针对当前的光致伸缩驱动器构型在壳类结构的振动抑制中不能产生负膜力的问题,提出了一种新型的多片组合驱动器构型。并将该构型层合在圆柱薄壳结构的上下表面,建立了光电层合圆柱壳独立模态振动控制方程。考虑到光致伸缩驱动器的非线性和时变驱动特性,以及模型的不确定性,设计了基于性能函数负梯度调节的规则自组织模糊主动控制器,克服了常规模糊控制器控制规则设计的困难;为了验证上述提出的控制策略的有效性,进行了数值仿真;仿真结果表明提出的自组织模糊控制器取得了理想的振动控制性能,实现了柔性薄壳结构的非接触主动振动控制。To produce negative membrane control force for photostrictive actuators, a new muhi-layer actuator configuration was firstly presented, it was laminated on surfaces of a cylindrical thin shell, then the independent modal vibration control equations for photoelectric laminated cylindrical thin shells were established. Moreover, considering the model uncertainty and the nonlinear and time-varying characteristics of photostrictive actuators, a self-organizing fuzzy controller （SOFC） based on the performance function gradient-descent method was designed. The proposed control scheme did not need fuzzy control rules and overcame the difficulty of designing control rules for a conventional fuzzy controller. To verify the effectiveness of the proposed control scheme, numerical simulation was perfbrmed. The results demonstrated that the proposed self-organizing fuzzy control strategy has a better vibration control effect and realizes a non- contact active vibration control of flexible thin shell structures.

关 键 词：光致伸缩驱动器 圆柱薄壳 自组织模糊控制 振动控制 

分 类 号：O328[理学—一般力学与力学基础] V214.3[理学—力学]