Nonlinear decentralized control of seismically excited civil structures

Jian Wang; Hui Li; Luyu Li; Gangbing Song

doi:10.1117/12.816460

6 April 2009 Nonlinear decentralized control of seismically excited civil structures

Jian Wang, Hui Li, Luyu Li, Gangbing Song

Proceedings Volume 7288, Active and Passive Smart Structures and Integrated Systems 2009; 72882E (2009) https://doi.org/10.1117/12.816460
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2009, San Diego, California, United States

Abstract

The dynamic behaviour of civil structures under strong earthquakes is usually nonlinear or inelastic. Conventional control approach is almost based on linear theory, such as the linear quadratic regulator (LQR) design. One of the common characteristics shared by seismically excited civil structures is a distinct subsystem property, which indicates there are only several floors of civil structures with nonlinear or inelastic vibration and the other with linear vibration. In this study, a robust control approach combining decentralized control with adaptive fuzzy control is proposed to treat the nonlinear control for civil structures. The structural system is decomposed into several artificially subsystems, while the different subsystem is adopted the corresponding control algorithm. The input-to-state stability of the entire system can be guaranteed by the proposed control method, and an H infinity performance is achieved through a subsystem with the proposed controller. Numerical examples are presented to demonstrate the effectiveness and robustness of the proposed controller.

Citation Download Citation

Jian Wang, Hui Li, Luyu Li, and Gangbing Song "Nonlinear decentralized control of seismically excited civil structures", Proc. SPIE 7288, Active and Passive Smart Structures and Integrated Systems 2009, 72882E (6 April 2009); https://doi.org/10.1117/12.816460

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