On Problem of Partial Stability for Functional Differential Systems with Holdover
https://doi.org/10.17587/mau.20.398-404
Abstract
The theory of systems of functional differential equations is a significant and rapidly developing sphere of modern mathematics which finds extensive application in complex systems of automatic control and also in economic, modern technical, ecological, and biological models. Naturally, the problems arises of stability and partial stability of the processes described by the class of the equation. The article studies the problem of partial stability which arise in applications either from the requirement of proper performance of a system or in assessing system capability. Also very effective is the approach to the problem of stability with respect to all variables based on preliminary analysis of partial stability. We suppose that the system have the zero equilibrium position. A conditions are obtained under which the uniform stability (uniform asymptotic stability) of the zero equilibrium position with respect to the part of the variables implies the uniform stability (uniform asymptotic stability) of this equilibrium position with respect to the other, larger part of the variables, which include an additional group of coordinates of the phase vector. These conditions include: 1) the condition for uniform asymptotic stability of the zero equilibrium position of the "reduced" subsystem of the original system with respect to the additional group of variables; 2) the restriction on the coupling between the "reduced" subsystem and the rest parts of the system. Application of the obtained results to a problem of stabilization with respect to a part of the variables for nonlinear controlled systems is discussed.
About the Author
V. I. Vorotnikov
Ural Federal University
Russian Federation
Russian Federation
D. Sc. (Phys. & Math.), Professor
Ekaterinburg
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Review
For citations:
Vorotnikov V.I. On Problem of Partial Stability for Functional Differential Systems with Holdover. Mekhatronika, Avtomatizatsiya, Upravlenie. 2019;20(7):398-404. (In Russ.) https://doi.org/10.17587/mau.20.398-404
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