H∞Speed Control of an Induction Motor with the Two-Mass Resonant System by LMI

초록

In the industrial motor drive system, a shaft torsional vibration is often generated when a motor and a load are connected with a flexible shaft. This paper treats as the vibration suppression control of such a system. In this paper, a control system design method using Linear Matrix Inequality(LMI), which is a tool for control design that replaces or complements Lyapunov-Riccati equations, is provided and the H∞ speed controller for an induction motor by LMI is proposed. In the H∞ speed controller weights are used to satisfy tracking and disturbance rejection. Experimental results show the validity of the proposed H∞ speed controller by LMI, and this controller is compared with the state feedback controller.