Spectral Decompositions for the Solutions of Lyapunov Equations for Bilinear Dynamical Systems
- Authors: Yadykin I.B.1, Iskakov A.B.1
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Affiliations:
- Trapeznikov Institute of Control Sciences, Russian Academy of Science
- Issue: Vol 100, No 2 (2019)
- Pages: 501-504
- Section: Control Theory
- URL: https://journals.rcsi.science/1064-5624/article/view/225731
- DOI: https://doi.org/10.1134/S1064562419050259
- ID: 225731
Cite item
Abstract
In this paper, novel spectral decompositions are obtained for the solutions of generalized Lyapunov equations, which are observed in the study of controllability and observability of the state vector in deterministic bilinear systems. The same equations are used in the stability analysis and stabilization of stochastic linear control systems. To calculate these spectral decompositions, an iterative algorithm is proposed that uses the residues of the resolvent of the dynamics matrix. This algorithm converges for any initial guess, for a non-singular and stable dynamical system. The practical significance of the obtained results is that they allow one to characterize the contribution of individual eigen-components or their pairwise combinations to the asymptotic dynamics of the perturbation energy in deterministic bilinear and stochastic linear systems. In particular, the norm of the obtained eigen-components increases when frequencies of the corresponding oscillating modes approximate each other. Thus, the proposed decompositions provide a new fundamental approach for quantifying resonant modal interactions in a large and important class of weakly nonlinear systems.
About the authors
I. B. Yadykin
Trapeznikov Institute of Control Sciences, Russian Academy of Science
Author for correspondence.
Email: jad@ipu.ru
Russian Federation, Moscow, 117997
A. B. Iskakov
Trapeznikov Institute of Control Sciences, Russian Academy of Science
Author for correspondence.
Email: isk_alex@mail.ru
Russian Federation, Moscow, 117997