M.А. Doronina, V.І. Korsun

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A new approach to solving the inverse problem of dynamics – the measurement of the input signal of measurement means. To improve the accuracy of measurement the theory of wave patterns perturbation is used. The latter is realized by presenting the unknown signal device as the sum of two components deterministic and random. , that has the wave structure. Next, using state observers the evaluation of the second component is found. Combining this evaluation with the deterministic component leads to the evaluation of the input device. The results of computational experiment are given.