Volume 14, Issue 4 (10-2024)
IJOCE 2024, 14(4): 553-572 |
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Nikpey M, Khatibinia M, Eliasi H. SEISMIC CONTROL OF MAGNETO-RHEOLOGICAL DAMPER-EQUIPPED STRUCTURES USING SLIDING SECTOR CONTROL. IJOCE 2024; 14 (4) :553-572
URL: http://ijoce.iust.ac.ir/article-1-608-en.html
URL: http://ijoce.iust.ac.ir/article-1-608-en.html
1- Department of Civil Engineering, University of Birjand, Birjand, Iran
2- Department of Electrical Engineering, University of Birjand, Birjand, Iran
2- Department of Electrical Engineering, University of Birjand, Birjand, Iran
Abstract: (645 Views)
In recent years, semi-active control has been introduced as a promising method for the seismic control of structures, potentially combining the benefits of both passive and active control systems. Magneto-rheological damper (MR) is one of the semi-active devices and its dynamic model is expressed by the Bouc-Wen model. The sliding sector control (SSC) strategy as a robust control approach is a class of variable structure (VS) systems for linear and nonlinear continuous-time systems with a special type of sliding sector using a new equivalent sector control. The purpose of this study is to evaluate the effectiveness of the SSC strategy in determining the optimal voltage of MR at each step of time. For a numerical example, a three-story benchmark shear structure is considered subjected to normal (100%), high (150%), and low (50%) excitation levels of the El Centro earthquake. The results of the numerical simulations show that the semi-active control system consisting of the SSC strategy and an MR damper can be beneficial in reducing the seismic responses of structures. Furthermore, the efficiency of the SSC strategy is also compared against that of the fuzzy and clipped-optimal controllers. Comparative results of the numerical simulation confirm the robustness and ability of the SSC strategy.
Keywords: Magneto-rheological Damper, Structural Control, Semi-active Control, Sliding Sector Control
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