ANALYTICAL ALGORITHM FOR COMPUTING GAIN AND PHASE MARGINS FOR DISCRETE TIME SYSTEM

Authors : Esmat BEKİR

Pages : 47-55

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Publication Date : 2018-12-30

Article Type : Research Paper

Abstract :This note describes an algorithm for computing the gain and phase margins for single input single output discrete time systems. It converts the complex computations into real computations. It results into Chebyshev polynomials from which we compute the desired margins. The algorithm is simple, easy to implement and devoid of complex computations.
Keywords : Gain margin, phase margin, control system stability, discrete time system, Chebyshev polynomials