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Smart Structures and Systems Volume 19, Number 4, April 2017 , pages 351-360 DOI: https://doi.org/10.12989/sss.2017.19.4.351 |
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Implementation of Uniform Deformation Theory in semi-active control of structures using fuzzy controller |
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Reza Karami Mohammadi and Fariba Haghighipour
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| Abstract | ||
| Protection of structures against natural hazards such as earthquakes has always been a major concern. Semi-active control combines the reliability of passive control and versatility and adaptability of active control. So it has recently become a preferred control method. This paper proposes an algorithm based on Uniform Deformation Theory to mitigate vulnerable buildings using magneto-rheological (MR) damper. Due to the successful performance of fuzzy logic in control of systems and its simplicity and intrinsically robustness, it is used here to regulate MR dampers. The particle swarm optimization (PSO) algorithm is also used as an adaptive method to develop a fuzzy control algorithm that is able to create uniform inter-story drifts. Results show that the proposed algorithm exhibited a desirable performance in reducing both linear and nonlinear seismic responses of structures. Performance of the presented method is indicated in compare with passive-on and passive-off control algorithms. | ||
| Key Words | ||
| semi-active control; fuzzy system; MR damper; Uniform Deformation Theory; particle swarm optimization algorithm | ||
| Address | ||
| Department of civil engineering, K. N. Toosi University of Technology, No. 1346, Vali Asr Street, Mirdamad Intersection, Tehran, Iran | ||