ADAPTIVE FUZZY SLIDING MODE CONTROL FOR BASE-ISOLATED BUILDINGS

2000 ◽  
Vol 09 (04) ◽  
pp. 493-508 ◽  
Author(s):  
WEI-LING CHIANG ◽  
KEN YEH ◽  
MING-YI LIU
Keyword(s):  
Sliding Mode Control ◽  
Structural Control ◽  
Sliding Mode ◽  
Adaptive Sliding Mode Control ◽  
Fuzzy Sliding Mode Control ◽  
Adaptive Fuzzy ◽  
Adaptive Sliding Mode ◽  
Mode Control ◽  
Adaptive Fuzzy Sliding Mode ◽  
Fuzzy Sliding Mode

The purpose of this paper is to apply adaptive fuzzy sliding mode control for the structural control of base-isolated buildings. Combining the fuzzy control and sliding mode control one can reduce the complexity of fuzzy rule bases. It also ensures the stability and robustness. The Lyapunov theory is used to develop the adaptive law. In addition to full-state-feedback controller, an estimator using only the measured information from a few sensors is presented. Finally, the adaptive sliding mode control is applied to two types of base-isolated building, with LRB, and sliding bearing isolators. Stiffness uncertainty and time delay is utilized to illustrate the robustness of this proposed algorithm. The effectiveness of this algorithm is demonstrated by simulation results for a long period, a wide-pass white noise artificial earthquake and Taiwan Chi Chi earthquake occurred in 1999. The simulations show that adaptive sliding mode control can achieve satisfactory results in the application of structural control for base-isolated buildings.

Application of Adaptive Fuzzy Sliding Mode Control for Bridges

2001 ◽  
Vol 5 (3) ◽  
pp. 172-179 ◽  
Author(s):  
Ken Yeh ◽  
◽  
Wei-Ling Chiang ◽  
Keyword(s):  
Sliding Mode Control ◽  
Structural Control ◽  
Sliding Mode ◽  
Adaptive Sliding Mode Control ◽  
Fuzzy Sliding Mode Control ◽  
Adaptive Fuzzy ◽  
Adaptive Sliding Mode ◽  
Mode Control ◽  
Adaptive Fuzzy Sliding Mode ◽  
Fuzzy Sliding Mode

This paper applies adaptive fuzzy sliding mode control of structural control for bridges. Combining fuzzy control and sliding mode control can reduce the complexity of fuzzy rule base. It also ensures stability and robustness. The Lyapunov theory is used to develop adaptive law. adaptive sliding mode control is applied to 3 types of bridge, with LRB (Lead Rubber Bearing), sliding bearing isolators and no isolation device. The condition of stiffness uncertainty and time delay is used to show the robustness of this algorithm. The effectiveness of this algorithm is demonstrated by simulation results for a long period and a wide-pass white noise artificial earthquake. All these simulations are shown that adaptive sliding mode control can achieve satisfactory results in the application of structural control for bridges.

scholarly journals Direct Adaptive Fuzzy Sliding Mode Control with Variable Universe Fuzzy Switching Term for a Class of MIMO Nonlinear Systems

2012 ◽  
Vol 2012 ◽  
pp. 1-21 ◽  
Author(s):  
Guo Haigang ◽  
Li Hongxing ◽  
Zhao Weijing ◽  
Song Zhankui
Keyword(s):  
Sliding Mode Control ◽  
Sliding Mode ◽  
Fuzzy Sliding Mode Control ◽  
Adaptive Fuzzy ◽  
Variable Universe ◽  
Mode Control ◽  
Adaptive Fuzzy Sliding Mode ◽  
Control Schemes ◽  
Equivalent Control ◽  
Fuzzy Sliding Mode

Combining adaptive fuzzy sliding mode control with fuzzy or variable universe fuzzy switching technique, this study develops two novel direct adaptive schemes for a class of MIMO nonlinear systems with uncertainties and external disturbances. The proposed control schemes consist of fuzzy equivalent control terms, fuzzy switching control terms (in scheme one) or variable universe fuzzy switching control terms (in scheme two), and compensation control terms. The compensation control terms are used to relax the assumption on fuzzy approximation error. Based on Lyapunov stability theory, the parameters update laws are adaptively tuned online and the global asymptotic stability of the closed-loop system can be guaranteed. The major contribution of this study is to develop a novel framework for designing direct adaptive fuzzy sliding mode control scheme facing model uncertainties and external disturbances. The derived schemes can effectively solve the chattering problem and the equivalent control calculation in that environment. Simulation results performed on a two-link robotic manipulator demonstrate the feasibility of the proposed control schemes.

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