抄録
Exact model matching method can not be used for a system having unstable zeros since unstable pole-zero cancellations occur in the overall systems. In this paper, we will propose an approximate cancellation of anti-stable zeros instead of exact cancellations. For this, we will show a design method of approximate polynomials for the inverse of anti-stable polynomials using Taylor's expansion. Then, we will show a design of model following control systems for a plant having unstable zeros based on the pole placement scheme.