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Continuous finite-memory deadbeat observer
Luleå University of Technology, Department of Computer Science, Electrical and Space Engineering, Signals and Systems.
Department of Chemical Engineering, Åbo Akademi.
1992 (English)In: Proceedings of the 1992 American Control Conference: the Westin Hotel, Chicago, Illinois, June 24 - 26, 1992, IEEE Communications Society, 1992, 1800-1806 p.Conference paper (Refereed)
Abstract [en]

A significant class of model-based control approaches uses Kalman filters or Luenberger observers to estimate the plant state vector. Infinite dynamic observer memory inflicts a phenomenon generally referred to as divergence. To overcome this drawback, a structure that intrinsically has finite process memory and does not need state vector integration is proposed in this paper. The observer uses a finite number of delayed input/output measurements to reconstruct the state vector with zero error being provided with a process history over its largest time-delay. This property resembles the deadbeat observer performance for discrete time systems. Moreover, the largest time-delay value puts a natural limit to the observer memory. The Luenberger observer analogy proved to be a useful tool for the observer analysis and paves the way toward observer optimization.

Place, publisher, year, edition, pages
IEEE Communications Society, 1992. 1800-1806 p.
Research subject
Control Engineering
URN: urn:nbn:se:ltu:diva-40552Local ID: fba43990-2ccb-11dd-9c9b-000ea68e967bISBN: 0-7803-0210-9 (print)OAI: diva2:1014074
American Control Conference : 24/06/1992 - 26/06/1992
Godkänd; 1992; 20080528 (cira)Available from: 2016-10-03 Created: 2016-10-03Bibliographically approved

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