Spectral decompositions for the solutions of Lyapunov equations for bilinear dynamical systems
| Autor: | Alexey B. Iskakov, Igor B. Yadykin |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Lyapunov function
Multidisciplinary Dynamical systems theory Iterative method 010102 general mathematics Linear system Bilinear interpolation 01 natural sciences 010305 fluids & plasmas Controllability symbols.namesake Nonlinear system 0103 physical sciences symbols Applied mathematics Observability 0101 mathematics Mathematics |
| Zdroj: | Доклады Академии наук. 488:599-603 |
| ISSN: | 0869-5652 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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