A stochastic optimal guaranteed estimation problem for dynamic delayed systems with uncertain statistics is considered. The solution of this problem reduces to a complex nonsmooth extremal problem. To obtain an approximate solution, the nonsmooth problem is replaced by a smooth one. Constructive filtering algorithms are obtained from an approximate solution of the smooth problem under the assumption that the delay is small in comparison with the observation time. Estimates for the nonoptimality levels of the proposed filtering algorithms are derived.
Issue Section:
Technical Papers
1.
Kolmanovskii
, V. B.
, Kopylova
, N. K.
, and Matasov
, A. I.
, 2001, “An Approximate Method for Solving Stochastic Guaranteed Estimation Problem in Hereditary Systems,” Dynamic Systems and Applications, 10(3), pp. 305–325.1.
Kolmanovskii, V. B., and Maisenberg, T. L., 1973, “Optimal Control for Stochastic Systems With Delay,” Automatika i telemekhanika, (1), pp. 47–61
2.
(English transl. in Autom. Remote Control), (1) (1973).
1.
Matasov A. I., 1999, Estimators for Uncertain Dynamics Systems, Kluwer Academic Publishers, Dordrecht-Boston-London.
2.
Kolmanovskii
, V. B.
, Mao
, X.
, and Matasov
, A. I.
, 1998, “On Approximate Solving the Mean-Square Filtering Problem in Hereditary Systems,” Dynamic Systems and Applications, 7(2), pp. 259–276.3.
Eller
, D. H.
, Aggarwal
, G. K.
, and Banks
, H. T.
, 1969
, “Optimal Control of Linear Time-Delay Systems
,” IEEE Trans. Autom. Control
, AC-14
(6
), pp. 678
–687
.4.
Kopylova, N. K., and Matasov, A. I., 2002, “The Method of Small Parameter for Solving the Estimation Problem in Systems With Delay,” Vestnik Moskovskogo Universiteta. Seriya Matematika. Mekhanika, (2), pp. 68–70 (English transl. in Moscow University Mechanics Bulletin, 57(2) 2002).
5.
Kolmanovskii, V. B., and Myshkis, A. D., 1999, Introduction to the Theory and Applications of Functional Differential Equations, Kluwer Academic Publishers, Dordrecht-Boston-London.
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Ekeland, I., and Temam, R., 1976, Convex Analysis and Variational Problems, North-Holland Publishing Co., Amsterdam-Oxford;
2.
American Elsevier Publishing Co., Inc., New York.
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