结构振动半主动控制分析及仿真程序分析.docx

Abstract
Civil engineering structure has been faced with the safety threat under the action of earthquake, wind and other dynamic loads, the theory of vibration control can be used to reduce the dynamic response of the structure and avoid structure damage. Compared with active vibration control, semi-active vibration control, especially the semi-active control device using orheological fluid or other intelligent materials, needs less energy input, but the control effect is almost close to that of the active vibration control, which attracts great favour of the researchers; In addition, the numerical simulation of the vibration control system has been an active field.
This paper first introduces the basic principle of structural vibration control, monly used control algorithm, the mechanical model of orheological damper and and the Benchmark problem. Then taking the 76 story reinforced concrete Benchmark model as an example, by using MATLAB, and SIMULINK modeling, this paper analyzed systematically the dynamic response of the models under the conditions as below: primary model without control, model with active controller (LQR control algorithm), model adopted the orheological fluid damper(simple Bang-Bang control algorithm, optimum Bang-Bang control algorithm, limited Hrovat optimum control algorithm, the fuzzy control algorithm) when the earthquake waves are El Centro wave, Kobe wave and Northridge wave, pared the control effect of different control algorithms. Finally, comprehensive using the MATLAB graphical user interface (GUI) tool, making a GUI design, the autor independently developed the program system, named SEMACTCONsystem, which can be used in the structural vibration simulation analysis of semi-active control system.
The MATLAB language, SIMULINK tool box and GUI tool prehensively used in this paper to study the structural vibration of semi-active control thoroughly. Then the simulation analysis process was integrated into a visualization programming