Hybrid Optimization Control of Tuned Liquid Column Damper in Framed Structure

Abstract

ABSTRACT newlineRecent civil engineering structures are elastic and slender and they have lesser amount newlineof damping. Consequently they are subjected to large avoidable vibrations when an newlineexternal force acts. These excitations initiate structural damage and in further leads newlinetowards disintegration of the structure. For this reason, control devices are used for newlinecontrolling these unnecessary vibrations. Tuned Liquid Column Damper (TLCD) is newlineone of a passive supplementary control device to lessen these excitations. TLCD will newlinetransmit the energy from the structure to TLCD through the motion of water in a Ushape newlinetube similar to devices fitted with an orifice opening. Owing to this motion, the newlineexcitations will be reduced to certain extent. The present study helps the researchers newlineto the better familiarity of control of vibration of the structures and assists the newlinedesigners to acquire the optimized TLCD for buildings. newlineThe application of Fuzzy Logic for effective control problems have been newlineincreasing in the increasing trend in the past decades. In the present study, a FLC is newlinedesigned for a TLCD control device taking into consideration a multi degree of newlinefreedom system against unit step force. The improvement of FLC is based on its newlinecapacity to handle the nonlinear behavior of the system and robustness. The problem newlineof creating attractive fuzzy rules is very important in the concern of fuzzy systems. It newlineis known that the fuzzy control rules for a control system is constantly assembled with newlinetrial and error by designers and based on their experience or some experiments. newlineThis dissertation focuses on the development, evaluation, and validation of a newlinenew semi-active control strategy in the buildings. The effectiveness of fuzzy newlinecontroller for structural vibration control using Particle Swarm Optimization (PSO), newlinefirefly optimization (FFA) and hybrid optimization is investigated. It explores the newlineapplication of Fuzzy Logic for structure TLCD system using Particle Swarm newlineOptimization (PSO), Firefly Algorithm (FFA) and Hybrid Optimization (HO). Fir