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Basic properties on linearization by output injection are investigated in this paper. A special structure is sought which is linear up to a suitable output injection and under a suitable change of coordinates. It is shown how an observer may be designed using theory available for linear time delay systems.
They are gathered here as one text in two chapters. Their contents is unchanged except that-a few redundancies have been eliminated,-the two lists of bibliographical references have been merged into one, and-cross-referencing between the two papers has been improved.
It is shown that a discrete-time system may be linearizable by exogenous dynamic feedback, even if it cannot be linearized by endogenous feedback. This property is completely unexpected and constitutes a fundamental difference with respect to the continuous-time case. The notion of exogenous linearizing output is introduced. It is shown that existence of an… (More)
A de-scriptor approach to sliding mode control of systems with time-varying delays, " Int. Stability of systems with uncertain delays: A new 'com-plete' Lyapunov-Krasovskii functional, " IEEE Trans. A robust output feedback controller of the induction motor drives: New design and experimental validation, " Int.ability and observers for nonlinear systems… (More)