SEISMIC CONTROL OF 10-STOREY SHEAR FRAME USING ACTIVE TUNED MASS DAMPERS AND OPTIMIZATION BY PARTICLE SWARM OPTIMIZATION ALGORITHM

Due to structural safety and residential comfort, the vibration control of tall buildings under earthquake and wind excitations has always been one of the important issues in the structural engineering context. One of the well-established approaches for controlling the structural vibration is the use of Tuned Mass Dampers (TMD) employed with different methods in structures. In this paper, a 10-story shear building with linear behavior is studied under twenty eight far-field and near-field earthquakes in MATLAB. Active Tuned Mass Damper (ATMD) is used to control the structural vibration. According to the earthquake excitation random nature, Fuzzy Logic and Mamdani Inference System are applied to determine the control force. In addition, the Particle Swarm Optimization (PSO) algorithm is used to determine the optimum TMD actuator power, and in this optimization, the effect of the actuator saturation is also considered. Furthermore, a method is introduced for robust optimum design of the suggested controller. Using the proposed control system and the optimum actuator power, structural responses decline about 44 pct. Additionally, due to the existence of uncertainty in earthquake records, applying a controller with average actuator power generally results in 33 pct. structural response reduction, and the performance of the active controlled system always outperforms the passive controlled system with 16 pct. structural response reduction.