The Vibration Suppression Control of the Two-Mass Resonant System using the H∞Filter

초록

In the industrial motor drive system, a shaft tortional vibration is often generated when a motor and a load are connected with a flexible shaft. This pater treats the vibration suppression control of such a system. In recent there new method which estimates the unknown state varibles by using the reduced order observer and feedback these state variables by using a pole placement design method. This state feedback control method can control the command following property and the load disturbance suppression property independently. In this paper the vibration suppression control method of the two-mass resonant system using the H∞ filter is proposed. The proposed control method use the H∞ filter as an observer of the state feedback control. The H∞ filter has good estimating property about unknown input. To show the validity of the H∞ filter, under same control, we compared real shaft tortional torque with estamated shaft tortional torque.In case of using th state observer or the H∞ filter, respectively. As a result, we confirmed that the H∞ filter had excellent estimating property. And experimental results show the validity of the proposed controller and the proposed controller is compared with the state feedback controller using the state observer.