Integration of structural control and the identification of structures under unknown excitation
In practice,the structural health monitoring system and the vibration control system usually be installed in buildings simultaneously.But in previous studies,these two systems are often treated separately,which could lead to unefficient and diseconomy.In the last decade,some approaches have been propsed for integrating the both systems.However,the most of propsed methods have some limitations,such as demand of measurements of all structural responses and control forces.In this study,based on the extended Kalman filter under unknown inputs(EKF-UI),an integrated vibration control and identification of structural parameters approach is proposed for identifying the structural parameters of the controlled structures.Under the partial observation of the structural responses,the state and the unknown excitations of a controlling structural are identified with the application of EKF-UI.According to the structural parameters and responses included in the identified state,a linear quadratic Gaussian(LQG)algorithm can be used herein for the determination of the optimal control forces.Finaly,Base on the determinated optimal control forces,the semiactive control forces can be calculated by using one kind of switching control algorithm.A six-story shear building structure equipped with MR dampers is performed to numerically demonstrate the effectiveness of the proposed integrated algorithm.
structural parameter identification vibration control EKF-UI integrated algorithm
Jubin Lu Ying Lei
Department of Civil Engineering,Xiamen University,Xiamen 361005,China
国际会议
The 7th World Conference on Structural Control and Monitoring(7WCSCM)(第七届结构控制与监测世界大会)
青岛
英文
2259-2269
2018-07-22（万方平台首次上网日期，不代表论文的发表时间）