Aiming at the active control problem concerning the dynamic disaster of large-span spatial structure, a GMM actuator was designed. The operational principle of the active control system was introduced, and the spatial state equation for the controlled system was established. The genetic algorithm was used to perform the optimal design for the arrangement position of active control actuator in large-span spatial structure. The basic structure of fuzzy control system as well as the manufacturing principle and method of the fuzzy controller were analyzed. In addition, a standard fuzzy controller was designed. The MATLAB software was adopted to carry out the fuzzy control analysis on the vibration of large-span spatial grid structure. The results show that the GMM actuator has good actuating effect. The application of genetic algorithm can effectively improve the efficiency of optimal design for active control. Meanwhile, the global optimization of the structure is realized. The fuzzy control can effectively reduce the vibration reaction of large-span spatial structure, and is a better control method for structural vibration.%针对大跨空间结构动力灾变主动控制问题,设计了一种超磁致伸缩作动器.介绍了主动控制系统的工作原理,并建立了受控系统的空间状态方程,采用遗传算法对大跨空间结构主动控制作动器的布置位置进行了优化设计.分析了模糊控制系统的基本结构及模糊控制器的制作原理和方法,并设计了标准模糊控制器.应用MATLAB软件对大跨空间网架结构振动进行了模糊控制分析,结果表明,超磁致伸缩作动器具有良好的作动效应,利用遗传算法有效地提高了主动控制优化设计效率,同时实现了对结构的整体优化,模糊控制能够有效地降低大跨空间结构的振动反应,是一种较好的结构振动控制方法.
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