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JOURNALS // Zhurnal Vychislitel'noi Matematiki i Matematicheskoi Fiziki // Archive

Zh. Vychisl. Mat. Mat. Fiz., 2018 Volume 58, Number 7, Pages 1121–1131 (Mi zvmmf10749)

This article is cited in 3 papers

Dynamic reconstruction of disturbances in a quasilinear stochastic differential equation

V. L. Rozenberg

Institute of Mathematics and Mechanics, Ural Branch, Russian Academy of Sciences, Yekaterinburg, Russia

Abstract: The problem of reconstructing unknown inputs in a first-order quasilinear stochastic differential equation is studied by applying dynamic inversion theory. The disturbances in the deterministic and stochastic terms of the equation are simultaneously reconstructed using discrete information on some realizations of the stochastic process. The problem is reduced to an inverse one for ordinary differential equations satisfied by the expectation and variance of the original process. A finite-step software implementable solution algorithm is proposed, and its accuracy with respect to the number of measured realizations is estimated. An illustrative example is given.

Key words: dynamic reconstruction, quasilinear stochastic differential equation, auxiliary controlled model.

UDC: 517.245

Received: 03.10.2017
Revised: 26.01.2018

DOI: 10.31857/S004446690001461-8


 English version:
Computational Mathematics and Mathematical Physics, 2018, 58:7, 1071–1080

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