1. Qualitative features of matrix pencils and DAEs arising in circuit dynamics.
- Author
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Riaza, Ricardo and Tischendorf§, Caren
- Subjects
- *
ELECTRIC circuits , *DIFFERENTIAL-algebraic equations , *MATRIX pencils , *MATRICES (Mathematics) , *NONLINEAR theories , *GRAPH theory - Abstract
The dynamical behaviour of nonlinear electrical circuits is usually modelled in the time domain by differential-algebraic equations (DAEs). The differential-algebraic formalism drives qualitative analyses based on linearization to a matrix pencil setting. In this context, the present paper performs a spectral analysis of matrix pencils and DAEs arising in nonlinear circuit theory. Specifically, the non-singularity, hyperbolicity and asymptotic stability of equilibria are addressed in terms of circuit topology. The differential-algebraic framework puts the results beyond those already known for state-space models, unfeasible in many actual problems. The topological conditions arising in this qualitative study are proved independent of those supporting the index, and therefore they apply to both index-1 and index-2 configurations. The approach illustrates how graph theory, matrix analysis and DAE theory interact in the dynamical study of nonlinear circuits. [ABSTRACT FROM AUTHOR]
- Published
- 2007
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