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An improved sufficient condition for absence of limit cycles in digital filters

Vaidyanathan, P. P. and Liu, V. (1987) An improved sufficient condition for absence of limit cycles in digital filters. IEEE Transactions on Circuits and Systems, 34 (3). pp. 319-322. ISSN 0098-4094.

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It is known that if the state transition matrix A of a digital filter structure is such that D - A^{dagger}DA is positive definite for some diagonal matrix D of positive elements, then all zero-input limit cycles can be suppressed. This paper shows that positive semidefiniteness of D - A^{dagger}DA is in fact sufficient. As a result, it is now possible to explain the absence of limit cycles in Gray-Markel lattice structures based only on the state-space viewpoint.

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Vaidyanathan, P. P.0000-0003-3003-7042
Additional Information:© Copyright 1987 IEEE. Reprinted with permission. Manuscript received November 12, 1986. This work was supported in part by the NSF grant ECS 84-04245 and in part by Caltech’s programs in advanced technology sponsored by Aerojet General, General Motors, GTE, and TRW.
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Deposited On:07 Nov 2006
Last Modified:09 Mar 2020 13:19

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