Stability theory for linear time-invariant plants with periodic digital controllers.

Bruce A. Francis, Tryphon T. Georgiou

Research output: Contribution to journalConference articlepeer-review

1 Scopus citations

Abstract

The control of a linear time-invariant plant by a digital controller composed of a sampler, a periodic discrete-time component, and a zero-order hold is presented. The stability of such a configuration is analyzed. It is shown how closed-loop zeros can be placed using such a scheme. As a consequence, it is proved that the gain margin can be arbitrarily assigned by suitable choice of sampling time and digital controller. The design procedure is constructive, using state-space methods.

Original languageEnglish (US)
Pages (from-to)1225-1231
Number of pages7
JournalProceedings of the American Control Conference
Volume88 pt 1-3
StatePublished - Dec 1 1988

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