DECENTRALIZED FUZZY SLIDING MODE CONTROL (DFSMC) FOR CIVIL ENGINEERING STRUCTURES
PAN Zhao-dong1,3 TAN Ping2 ZHOU Fu-lin2,3
1. College of Civil Engineering, Hunan University, Changsha 410082;
2. Earthquake Engineering Research & Test Center, Guangzhou University, Guangzhou 510405
Abstract:A decentralized fuzzy sliding mode control algorithm (DFSMC) is proposed here for dealing with the influence of the interconnected terms of different subsystems and the uncertainty of the external loads. The Lyapunov function is employed to design the decentralized sliding mode control law which depends only on the displacement and the velocity response of relevant story. And the switching gain of the decentralized sliding mode control law is adaptively adjusted by the fuzzy control system. The decentralized fuzzy sliding mode control algorithm (DFSMC) is further designed. The ASCE 9-story benchmark building is selected as a numerical example to illustrate the control performances of the proposed decentralized algorithm. Numerical simulation results indicate that this decentralized algorithm is very valuable in engineering application for the reason that the DFSMC algorithm can perform up to a superior control performance when comparing with traditional centralized control, and can guarantee each of the actuators operating at maximum efficiency.
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