Active Vibration Control of the Prestressed Concrete Stress Ribbon Bridge Using by H∞ Control Theory

摘要

This study presents active vibration control methods for the prestressed stress ribbon pedestrian bridge using by H∞ control theory. This bridge is modeled by FEM and reduced to the five degree of freedom system. The excitation forces act on the three points on the bridge and a control force operates on one point on the bridge. We consider the dynamics of the actuator. The linear quadratic control and the H∞ feedback control are investigated. Numerical results are shown that the H∞ controller is effective compare with the linear quadratic controller.