On observability of sampled-data systems

G. Langholz, Y. Bar-Ness

Research output: Contribution to journalArticlepeer-review


In this paper we consider sampled-data systems derived from continuous, time-invariant systems whose inputs are piecewise constant. The problem dealt with is that of finding necessary and sufficient conditions for observability of the sampled-data system, given that the continuous-time system is observable. By comparison With some previously obtained results pertaining to the preservation of controllability under sampling, it is shown that the latter requires a stronger condition than that required for the preservation of observability.

Original languageEnglish
Pages (from-to)697-704
Number of pages8
JournalInternational Journal of Systems Science
Issue number6
StatePublished - Jun 1977


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