A time approach to robustness of LTI systems with structured uncertainty and unmodelled dynamics

A sufficient condition is obtained for the robust stability of a linear time-invariant (LTI) plant with simultaneous time-varying structured state space uncertainty and unmodeled dynamics. The time-domain analysis results of robust constant gain output feedback are explicitly in terms of the closed-loop eigenvalues and eigenvectors and are well suited to the design of robust eigenstructure assignment controllers.<
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