A Method for the reduction of MIMO systems using Interlacing Property and Coefficients Matching

This paper suggests a mixed method for the reduction of order of linear high order MIMO systems. This method is based upon the interlacing property of the systems. The denominator polynomial of the reduced order model is obtained by using interlacing property and the numerator is obtained by matching the coefficients of higher order system with those of denominator of the reduced order model. In general the stability of the higher order system is retained in their models. This method is very much flexible and it avoids the iterative procedures for obtaining stable reduced models for a stable high order MIMO systems. The suggested method gives good approximation of the response characteristics of High order MIMO system and its model.