基于遗传算法的结构主动控制作动器优化布置  

The Optimal Placement about Actuators of Active Structural Control Based on Genetic Algorithm

作　　者：毛克阳[1] 孙作玉[1] 燕乐纬[1] 王晖[1] 

机构地区：[1]广州大学土木工程学院,广东广州510006

出　　处：《中山大学学报（自然科学版）》2013年第2期129-132,共4页Acta Scientiarum Naturalium Universitatis Sunyatseni

基　　金：国家自然科学基金资助项目(51178127)

摘　　要：研究地震激励作用下主动控制结构的作动器优化布置,基于等效激励法构造了随机激励,应用状态空间控制算法进行了求解。针对作动器优化布置问题提出了基于遗传算法的优化方案,即利用遗传算法的0,1染色体编码模拟作动器的楼层空间布置,实现了作动器数目限定条件下,以楼层最大加速度和层间位移角组合为控制目标函数的作动器最优布置。仿真分析表明,该优化方法适应性强,效果显著。The optimization of actuators of an active control structure under seismic excitation is studied. The random excitation is generated by equivalent excitation method, and the state space control algorithm is employed to calculate the dynamic responses. An optimized procedure based on genetic algorithm is proposed, in which a 0 - 1 chromosome coding is used to resemble the spatial arrangement of actuators. Several typical cases are analyzed, in which the fitness objectives are composed of maximum acceleration response and maximum inter-story angle, while the structure is controlled by certain actuators. The re-sults demonstrate that the proposed method is suitable and effective.

关 键 词：状态空间控制 等效激励法 遗传算法 作动器优化布置 

分 类 号：TU311.3[建筑科学—结构工程] O324[理学—一般力学与力学基础]