抄録
In this paper, a new H∞ controller reduction method which considers to maintain the H∞ property is proposed. The generalized H∞-controllers are able to described using free-parameters which are stabe and bounded. If a low order controller can be written with a free-parameter which satisfies the stability and the bounded condition, the low order controller become an H∞-controller. In order to satisfy the conditions, we employ an iteration method which contains the D-scaling matrix calculation and the balanced model reduction. Some numerical examples are illustrated to show the effectiveness of our method.