双单体组合隔震结构振动随机最优控制  

Random optimal vibration-control for a double-part combination of isolated structures

作　　者：邹立华[1] 赵建昌[2] 虞庐松[1] 

机构地区：[1]兰州交通大学土木工程学院,甘肃兰州730070 [2]上海大学理学院,上海200092

出　　处：《控制理论与应用》2005年第6期973-977,982,共6页Control Theory & Applications

基　　金：兰州交通大学青蓝人才工程资助项目(QL-05-08A)

摘　　要：用作动器将相距很近的两结构连为一体,并对其中一个结构施加隔震,形成一种新的结构体系—组合隔震结构体系.推导了其振动及控制方程,假定地震动输入为白噪声,运用随机最优控制原理,分析研究了组合结构振动控制性能及隔震度、阻尼及场地等参数的影响.研究结果表明:经过优化控制参数,组合隔震结构振动控制体系能对结构地震响应进行有效控制,并且控制成本降低.Two building structures neighboring each other are linked with actuators,and one of them is isolated,then a new pattern of structure,a combination of isolated structures,is formed. The vibration and control equations of this new system are derived in this paper. Regarding the input of earthquake as a white noise and using the principle of random optimal control, features of vibration control and effect of parameters such as isolation degree, damping and ground site are analyzed. The conclusions indicate that vibration-control system of combined structures can bring the seismic responses of structures under effective control by optimizing the control parameters of structure, and the cost of control can be reduced.

关 键 词：双单体 组合隔震结构 振动控制 随机最优控制 

分 类 号：O232[理学—运筹学与控制论]