Simulation Research On Vibration Control Based On Hydraulic Technology

The structure vibration control is the efficient measure for structural seismic control. By installing control devices in the structure, dynamic loads including seismic motion can be resisted, seismic dynamic response of structures can be kept in the design range. In general, the structure control methods involve passive control, active control, semi-active control and hybrid control and so on.Hydraulic component and hydraulic technique are widely used in the vibration control device, such as the viscous fluid damper, the semi-active viscous fluid damper, and the electro-hydraulic servo actuator.In this paper, a series of questions about structural seismic response control are discussed, these questions include the dynamic model of structure seismic vibration control system, the structure vibration control flow and algorithm, the application of Simulink platform and MATLAB procedure. The computation model of a continuous bridge is taken, the design scheme of a electro-hydraulic servo actuator is put forward with hydraulic technique relevant knowledge, the actuator's main parameter and the related hydraulic element are determined, the actuator's forward simulation model and backward neural network model are established. Based on the Simulink simulation models of the passive control system, the active control system and the semi-active control system, the simulation analysis for a bridge by using viscous fluid dampers and a electro-hydraulic servo actuators are made. The simulation results show the displacement, velocity and acceleration reaction of the bridge can be effectively controlled with active control strategy and the displacement reaction of the bridge can be controlled with reasonable installation site of viscous fluid dampers.