Model order reduction of MIMO system using differentiation method

In this paper differentiation method is proposed for driving reduced order model (ROM) of Multi-input multi output (MIMO) linear dynamic system. The proposed method is based on differentiation of polynomials numerator and denominators. The reduction procedure is very simple given better response when compared with other reduction techniques and original high order system. Also, the proposed method guarantees given stability of the reduced models of MIMO system if the original high order MIMO system is stable. The proposed approach of MIMO system order reduction model is illustrated with the help of an Two-input and Two-output (2x2) transfer function matrix and the results of MIMO transfer function matrix are compared with the recently published reduction modal order techniques.