A NEW LQG BASED DECENTRALIZED CONTROL ALGORITHM FOR LARGE-SCLAE STRUCTURES
Decentralized control is more suitable for structural control of large-scale structures. In this paper, a new decentralized control algorithm is proposed based on the LQG and substructure approaches. A large-scale structure is divided into a set of smaller substructures. Each substructure is controlled by its own local controller with interaction forces at substructural interfaces being considered as unknown external inputs to the substructure concerned. Recursive estimation of the state vector of the substructure and the unknown external inputs are implemented by the classical Kalman filter and the Kalman filter with unknown input, respectively in a sequential order. A numerical example of the decentralized control of a tall building is studied to illustrate the new algorithm proposed. Simulation results demonstrate that the proposed decentralized control provides satisfactory control performance when comparing with the conventional centralized LQG control algorithm. Therefore, it is viable for future structural control of large-scale structures.
Substructures Decentralized control LQG Kalman filter Unknown input
Ying Lei Yin Lin Z.H. Liu
Department of Civil Engineering, School of Architecture and Civil Engineering, Xiamen Universit, Fujian 361005,P.R. China
国际会议
第十届国际结构工程青年学者研讨会(The Tenth International Symposium on Structural Engineering for Young Experts)
长沙
英文
1283-1288
2008-10-19（万方平台首次上网日期，不代表论文的发表时间）