TA615 : Using fuzzy logic on active control of tall buildings response due to earthquake
Thesis > Central Library of Shahrood University > Civil & Architectural Engineering > PhD > 2021
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Abstarct: Protect the structure, its inhabitants and their equipment against earthquakes is one of the most important challenges in civil engineering. In the past, design methods baxsed on inelastic deformation were considered, but today structural control has received special attention. Classical control algorithms, on the other hand, require a precise model of the structure to reduce vibration, while the structures being constructed are narrower, more flexible, and have more complex properties. Therefore, reducing the complexity of the structural model is incorrect and the control mechanism baxsed on this model will not be optimal. Fuzzy control as a suitable method does not require an exact mathematical model of the structure and does not depend on the reduced model, so the study of fuzzy controller is important for a structure with several degrees of freedom in order to reduce vibrations from earthquakes. Fuzzy controller Due to its durability and high performance properties, it is used effectively and easily in control. In this study, we try to study the controlling effect on the response of the structure using a model with several degrees of freedom with an active mass damper that is considered in the last floor. For this purpose, the effect of the controller in limited the displacements and accelerations as well as the displacement of the active mass attenuator has been studied. Also, the efficiency of fuzzy controller for different earthquakes such as El Centro, Hachinohe, Northridge and Tabas has been calculated and evaluated by a simulated model in Matlab software. And the obtained responses are compared with the responses of the structure controlled by the active mass damper.
Keywords:
#Seismic control #Adjustable mass damper #Active Control #Fuzzy Logic Keeping place: Central Library of Shahrood University
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