混合隔振系统自适应模糊滑模控制  

Adaptive Fuzzy Sliding-mode Controller for Hybrid Vibration Isolation Systems

作　　者：杨理华[1] 朱石坚[1] 楼京俊[1] 李棒[2] 

机构地区：[1]海军工程大学动力工程学院,武汉430033 [2]中国人民解放军海军南海工程设计院,广东湛江524005

出　　处：《噪声与振动控制》2014年第6期192-196,共5页Noise and Vibration Control

基　　金：国家自然科学基金(51009143);全国优秀博士学位论文作者专项基金(201057)支持

摘　　要：针对机械设备被动隔振在低频段隔振效果较差的问题,建立磁致伸缩作动器的电—磁—机转化数学模型,提出一种基于自适应模糊滑模控制算法,并用李雅普诺夫方法证明控制器的稳定性,将该控制策略与磁致伸缩作动器应用于混合隔振系统中。仿真结果表明:在单频、多频及随即激励条件下,自适应模糊滑模控制器具有良好的动态特性和鲁棒性,能够提高系统隔振效率并拓宽隔振频段,有效减小传至基础的力。Aiming at the problem of poor vibration isolation effect of passive vibration isolators of mechanical equipmentin low frequency range, an electric- magnetic- mechanical conversion model for magnetostrictive actuators is established,and an adaptive fuzzy sliding-mode control algorithm is proposed. The stability of the controller is proved by Lyapunovmethod. Then, the control strategy and the magnetostrictive actuator are used in a hybrid vibration isolation system. Thesimulation results show that in whatever conditions of single frequency excitation, multi-frequency excitation or random excitation,the adaptive fuzzy sliding-mode controller has good dynamic characteristics and robustness. This property can alsobe used to improve the isolation efficiency and broaden the vibration isolation frequency band of the hybrid system, and effectivelyreduce the force transmitted to the foundation of the mechanical equipment.

关 键 词：振动与波 被动隔振 磁致伸缩作动器 自适应模糊滑模算法 混合隔振 

分 类 号：O328[理学—一般力学与力学基础]