巨-子型有控结构风振主动控制的作动器位置影响研究  

Study of the placement of actuators under active control of mega-sub controlled structure subjected to random wind loads

作　　者：秦相军[1] 张洵安[1] 刘新爱[1] 王显彬[1] 

机构地区：[1]西北工业大学力学与土木建筑学院,西安710072

出　　处：《强度与环境》2008年第6期19-24,共6页Structure & Environment Engineering

基　　金：西北工业大学科技创新基金(M450211);西北工业大学研究生创业种子基金资助(Z200534)

摘　　要：基于线性二次型性能指标极小的最优控制设计,推导并建立了巨-子型有控结构(MSCS)在随机脉动风载作用下的主动控制方程,对作动器位置对结构响应和控制力的影响进行了时程分析。研究的结果表明通过改变作动器在巨-子型有控结构中的设置位置可以有效的提高主动控制的效果,对MSCS进行主动控制时应合理设置作动器位置。The mega-sub controlled structure （MSCS） proposed recently is a new form of structures associated with the design and construction of super tall building. Active control, for mega-sub-controlled structure subjected to random along-wind loads is investigated based on LQR algorithm. Dynamic equation and method to assembling parameter matrixes for the meg-sub-controlled structure under random wind loads are presented. Time history, of the displacement of actuators which influence the structure response and control force is analyzed. The results of the numerical analysis show that controlling effectiveness of the structure can be improved effectively by the optimal placement of actuators in the new mega-sub controlled structure. When active control is actualized in MSCS, the placement of actuators should be mounted appropriately

关 键 词：巨-子型有控结构 作动器位置 主动控制 风振响应 

分 类 号：TU311.3[建筑科学—结构工程]