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Studies on structural vibration control with MR dampers using μGA

Li Hongnan (李宏男), Chang Zhiguo (常治国) and Song Gangbing (宋钢兵)

State Lab of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116024, China

Abstract:  A new approach to reducing the seismic response of spatial structures with magneto-rheological (MR) dampers is presented in this paper. The Genetic Algorithm with small populations (µGA) is used to optimize the control for the MR dampers to reduce structural vibration, which is difficult to achieve using classical optimal control. The advantages of µGA are the use of global properties and that fewer conditions are required to obtain the optimal function. Numerical results demonstrate the effectiveness of the proposed method in reducing the seismic response of structures.

Keywords: eccentric structure; semi-active control; magneto-rheological (MR) damper; genetic algorithm; linearization