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Dissipativity is an important property of individual systems that guarantees a stable interconnected system. However, due to errors in the modeling process weakly non-dissipative models may be constructed. This paper introduces an enhanced method to perturb a non-dissipative LTI system in order to enforce dissipativity using spectral perturbation results for para-Hermitian pencils. Compared to earlier...
This paper provides an eigenvalue perturbation result and applies it to the estimation of stability margins for uncertain, linear, discrete-time systems. An upper bound on the norm of a real perturbation maintaining the stability of a given asymptotically stable matrix is computed. It is shown that some other existing unstructured bounds are obtained as particular cases of the estimated stability...
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