A Design Method of Optimal H2 Integral Servo Controller for Torsional Vibration System

This paper proposes a design method of optimal H2 integral servo controller. The optimal H2 integral controller is to establish a way to find the admissible controller such that the controlled plant is stabilized and guarantee to track a constant reference signal while minimizing the close-loop system H2 norm from the disturbance to the controlled output. In this paper the derivative state constrained optimal H2 integral servo controller is proposed for oscillatory system with a constant disturbance. This design method has the advantage that it can be applied to reduce the vibration of the two-inertia system. The effectiveness of proposed controller is evaluated by experiments. In this paper, the theorem of the derivative state constrained optimal H2 integral servo controller is obtained by the standard H2 control framework (8). The proposed controller is applied to reduce the vibration of the two- inertia system. The verification of the effectiveness of the proposed controller to reduce the vibration responses and to reject the constant disturbance is shown by experiments.