Closed-and-open-loop Relationships of Zeros and Poles in Multivariable Feedback Systems
线性多变量反馈系统开闭环各类零极点关系描述

This paper discusses the reducible factors between the closed-loop and open-loop system pole polynomials in linear multivariable feedback systems, and their relationships with between the closed-loop and open-loop system structures. The proof is given with concepts of positive and inverse open-loop systems. The closed-loop system zero constitution is also proved.