Rational Approximation of Multiple Input Delay Systems Using the Hankel Singular Values Vectors

한켈특이치와 특이벡터를 이용한 복수 입력 시간지연 시스템의 유리근사화

This paper studies the rational approximation of multiple input delay systems using the Hankel singular values and vectors, which are the soultion of a transcendental equation. Rational approximatants are obtained from output normal realizations which are constructed by the Hankel singular values and vectors. Consequently, it is shown that rational approximants by output normal realization preserve intrinsic properties of time delay systems than Pade approximants.