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Article Citation - WoS: 14Citation - Scopus: 18Optimal Routh Approximants Through Integral Squared Error Minimisation: Computer-Aided Approach(inst Engineering Technology-iet, 2004) Singh, V; Chandra, D; Kar, HA computer-aided method for obtaining a reduced-order approximant of a given (stable) single-input single-output system based on the minimisation of 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 optimisation. The method has a built-in stability-preserving feature. The problem of formulating the ISE is circumvented by introducing a set of equality constraints.
