Active optimal control of SSI system based on the finite element model of SSI system

摘要：

First,a LQG controller based on the finite element model of SSI system is constructed to optimally control the responses of SSI system.Substructuring analysis is used to reduce the system into a smaller set of DOFs system to design the active controller,which includes the completely SSI effects.Second,the influence of the boundary condition and the depth of soil layer on control effectiveness are investigated using the proposed method.The results show that different boundary conditions can get almost same control effectiveness,but different depth of soil layer will influence the control effectiveness.Finally,the standard twofloor shear structure with SSI effects used as the model,and AMD controller strategy designed based on the proposed method is studied through the shaking table test,results show that the proposed method can effectively control the responses of SSI system compared with that designed based on the lump-parameter model.

关键词： LQG SSI Substructuring analysis (superelement) active control

作者: F.X. Wang J.P. Ou

作者单位: School of Civil Engineering,Harbin Institute of Technology,Harbin,Heilongjiang,China

会议类型: 国际会议

会议名称: The World Forum on Smart Materials and Smart Structures Technology(SMSST07)(2007年世界智能材料与智能结构技术论坛)

会议地点: 重庆·南京

会议语种:英文

在线出版日期: 2007-05-01（万方平台首次上网日期，不代表论文的发表时间）