Geodesic
On a new class of two-dimensional Volterra integral equations of the first kind with variable limits of integration
Trudy Instituta matematiki i mehaniki, Trudy Instituta Matematiki i Mekhaniki UrO RAN, Tome 28 (2022) no. 4, pp. 216-225 Cet article a éte moissonné depuis la source Math-Net.Ru

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The paper deals with linear two-dimensional Volterra integral equations of the first kind with variable lower and upper limits of integration. Such equations arise when describing the transient processes of a nonlinear dynamic system, represented as a finite segment (a polynomial) of the Volterra integro-power series. A new method for identifying symmetric kernels in the quadratic Volterra polynomial is presented, in which the input $x(t)$ and output $y(t)$ signals are scalar functions of time. The test signals used to solve this problem are chosen from the class of piecewise linear functions, which is explained by the specifics of the studied technical systems of the “input–output” type. This statement develops the approach based on test signals in the form of combinations of Heaviside functions and presented in the publications of A. S. Apartsyn. An explicit inversion formula is derived for a selected class of nonclassical Volterra equations of the first kind. Results about the existence and uniqueness of solutions of the corresponding integral equations are proved.
Keywords: nonlinear dynamic system
Mots-clés : identification, Volterra equations. 
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S. V. Solodusha. On a new class of two-dimensional Volterra integral equations of the first kind with variable limits of integration. Trudy Instituta matematiki i mehaniki, Trudy Instituta Matematiki i Mekhaniki UrO RAN, Tome 28 (2022) no. 4, pp. 216-225. http://geodesic.mathdoc.fr/item/TIMM_2022_28_4_a19/

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