The vibration controller design using positive position feedback control

We propose vibration controller design using positive position feedback (PPF) control. The five pairs of electromagnetic actuators and sensors are used to control strip vibration. Strip was modeled using finite element modeling (FEM). To reduce the order of the large scale model, the Krylov subspace technique was used. To control the vibration, PPF control was applied. The stability condition for MIMO system was derived to calculate the controller gain. Which shows the relationship between the DC gain of the controller and that of the strip system. Experiments shows the effectiveness of the proposed controller compared to convetional PID controller.