STABLE OPTIMAL MODEL REDUCTION OF LINEAR DISCRETE TIME SYSTEMS VIA INTEGRAL SQUARED ERROR MINIMIZATION : COMPUTER-AIDED APPROACH
Shailendra Kumar Mittal, Dinesh Chandra, Sharda Nagar · 2009
A computer-aided technique to obtain a reduced-order approximant of a given (stable) single-input single-output discrete time system based on the minimization of a integral squared error (ISE) pertaining to a unit step input is presented. Both the numerator and denominator coefficients of the model are treated as free parameters in the process of optimization. The method has a built-in stability-preserving feature.