© 2002 by Institute of Mathematics and its Applications
Neutral-type time-delay systems that are not formally stable are not BIBO stabilizable
1 Institut de Recherche en Communications et Cybernétique de Nantes, UMR CNRS 6597, 1 rue de la Noë, BP 92101, 44321 Nantes Cedex 03, France
It is shown that a time-delay system of neutral type that is not formally stable cannot be stabilized, in the sense of bounded input bounded output (BIBO) Stabilization, by any feedback in the large class of distributed systems that are Laplace transformable, even using derivatives in the control law. As a result, a time-delay system of neutral type is BIBO stabilizable if and only if it is formally stable and spectrally stabilizable.
Keywords: convolution systems; neutral-type time-delay systems; feedback system; BIBO stability; stabilization.