Space-based Piezoelectric Vibration Of Steel Structure Of Fuzzy Control Theory And Experimental Research

Space steel structure with its novel structure, elegant architectural style and a strong ability to get across the rapid development. But the existence of such a structure itself takes many forms, modeling complex, numerous bars and node characteristics such as the current structure of such studies have generally focused on the static performance, but its dynamic analysis and vibration control of disaster The study has just begun. As the large-span space steel structure in place its own rigidity of the flexible structure of the table smaller, so in the dynamic action of wind or earthquake, and so prone to fatigue damage under the structure of the dynamic response more sensitive, so the use of economic and reliable means to reduce earthquake losses is necessary to. However, large-span spatial lattice structure model complex, and difficult to accurately model. Fuzzy control as an intelligent control method is to mold and control technology, fuzzy product of the combination. It does not require the establishment of special hot accurate models, with artificial intelligence features. Hence, the control space steel structure model of vibration evident result.This paper describes the basic characteristics of piezoelectric materials and piezoelectric equations, analysis of the characteristics of piezoelectric actuator.Introduced the principle and structure of fuzzy control. Fuzzy control system described the work of the basic principles and characteristics of their scope of application.The piezoelectric rods integrated into the structure of a key component of the steel structure vibration control of space. Analysis of the basic principles of fuzzy control and fuzzy controller design, using SIMULINK toolbox set up the control of structural vibration control processes, and use fuzzy logic toolbox was reticulated shell structure of fuzzy modeling analysis,Has done a space steel structure vibration table test. Designed and produced two different models of space steel structure, its node weight and the main meta-control bar position were optimized. The control rods will be the main integrated in a good position to optimize the vibration table test. The experimental data were analyzed with the general principle component piezoelectric vibration control rods control law.