Order Reduction in z-Domain for Interval System Using an Arithmetic Operator

Abstract

This paper deals with order reduction in discrete-time systems. The reduction technique is based on utilization of Routh approximation and multiplicative operator. Various combinations of Routh table are used to derive the desired numerator and denominator polynomial of reduced-order model. Numerical examples are presented to verify the proposed algorithm. © 2018, Springer Science+Business Media, LLC, part of Springer Nature.