Active Tuned Mass Damper with Phase Control for Structural Vibration Mitigation(1/2)

This research aims at proposing an innovative phase control algorithm for developing active tuned mass damper. The essential of phase control algorithm for tuned mass damper is to apply control force to change the tuned mass block movement, resulting the mass block back to the 90 degrees lag of the structure so that the tuned mass damper has the maximum power flow to reduce the structural vibration. The phase control algorithm for active tuned mass damper has similar control effect to the LQR control low, but outperforms the LQR control low with minimized measurement input. Besides, the stroke of the tuned mass movement can be constrained by assigning appropriate amplitude ratio in the algorithm so that the phase control algorithm is more suitable for different situations in real world practice. The preliminary study has verified that this control algorithm is feasible and has its superiority. Unlike the conventional LQR or LQG control low, the design and control process of the phase control algorithm has irrelevant with the linearity or not of the structure. Therefore, the control effect can be expected that even if the structure encounters a strong earthquake into nonlinear behavior, the effect of structural vibration reduction still can be exerted. In this project, the development of active phase control tuned mass dampers is going to explore the performance in depth to promote the application of tune mass dampers in structural control.