Parameter Analysis And Efficiency Comparison Of The Steel Cable Vibration Control Based On Hybrid System

Wind-induced vibrations of cables could induce great safety hazard on bridge construction and normal operation. In order to solve the typical problem of wind-induced vibration of cables, the paper discusses and explores the vibration control of the stay cable and the vibration mechanism.Starting with wind-induced vibration hazards and damping effects on cables, this paper leads to the hybrid system control theory. Then, based on the theory of hybrid systems, cable damper mixed logic dynamic model of semi-active control are established and the simulation analysis of the model are done. In order to verify the practicability of the model, Based on this control system, MLD model of hybrid system is applied to a actual project:Qiongzhou Strait bridge. Parametric vibration analysis of cables under wind-induced vibration is done.In view of the importance of model efficiency, the comparison of the model efficiency, the programming efficiency and switching efficiency was done and a preliminary analysis about the reasons affecting the efficiency of the model is given at the end of the thesis. This work can lays the foundation of improving the efficiency of the model for the follow-up researchers.The MLD model of cable semi-active control is applied to actual project successfully. The problem of numerical unified analysis system about traditional theory and model is solved. For the first time, comparison of the model efficiency and its cause analysis are provided. Mixed logical dynamical systems theory with its model successfully solved the nonlinear state discrete event system and the vibration control problems of complex nonlinear. The introduction of the hybrid system has important significance in the field of Civil Engineering.