The method of polynomial arrays may be effectively utilized in determining stability of polynomials containing literal coefficients. In the paper, the application of the polynomial array method to discrete-time systems is further investigated. Using tabular forms introduced by Bistritz and by Premaratne and Jury, both shift-operator and delta-operator formulated discrete-time systems are addressed. Critical stability constraints for such systems are obtained directly from these tabular forms. An important application of the proposed method is in digitizing analogue systems with guaranteed stability.
|Original language||English (US)|
|Number of pages||7|
|Journal||IEE Proceedings D: Control Theory and Applications|
|State||Published - Jan 1 1993|
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