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- Medvedev, Alexander, et al.
(författare)
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Continuous finite-memory deadbeat observer
- 1992
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Ingår i: Proceedings of the 1992 American Control Conference. - : IEEE Communications Society. - 0780302109 ; , s. 1800-1806
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Konferensbidrag (refereegranskat)abstract
- 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.
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