Stability analysis for the systems with feedback norm constraint uncertainties

This paper considers the problem of L-p stability checking for a feedback u ncertain system which consists of a linear plant in its forward loop and no n-linear uncertain dynamics in its feedback loop. It is supposed that the n on-linear part of the system is of dynamic uncertainties characterized by a certain set of constraints. The concepts used here are the well-posedness of the feedback system and the norm constraint for the feedback uncertainti es, leading to a sufficient condition for robust stability. The result is i llustrated to be efficient through an example.