The authors address the problem of robust stabilization of imprecisely known linear time-invariant (LTI) plants, using nonlinear time-varying (NLTV) controllers. They consider a general family of LTI plants described by a nominal plant model with unstructured uncertainty, and show that a necessary and sufficient condition for such a family to be robustly stabilizable (by an arbitrary NLTV controller) is that it be robustly stabilizable by an LTI controller.
|Original language||English (US)|
|Number of pages||6|
|Journal||Proceedings of the IEEE Conference on Decision and Control|
|State||Published - 1986|