J-lossless 소인수분해와 균형화된 변환을 이용한 제어기 차수줄임

In this paper we proposed the systematic method of reducing the order of controller with robustness. State space formulae for all controllers is found by solving two coupled J-lossless coprime factorizations and model reduction problem. To reduce the order of controller. balanced truncation and Hankel approximation are used.