Abstract
In the precedent study, a method of self-sensing and model-free vibration control based on DVFB (Direct Velocity Feed Back) was proposed. However, in this method, control performance was deteriorated by the modeling error of the actuator. Therefore, in this study, we suggest a more robust method of self-sensing and model-free vibration control based on LQG (Linear-Quadratic-Gaussian) strategy. First, the relative velocity between the actuator and its installation point to the target structure is estimated by self-sensing technique. Second, the states of the actuator are estimated by Kalman filter using only the actuator model. Finally, LQR (Linear-Quadratic-Regulator) strategy is applied to design the controller for the actuator. In this paper, effectiveness of the proposed method is validated by simulation.
