L2 anti-windup for linear dead-time systems

In this paper we address and solve the problem of antiwindup augmentation for linear systems with input and output delay. In particular, we give a formal definition of the anti-windup construction problem in the global, local, robust and nominal cases. For each of these cases we show that a specific anti-windup compensation structure (which is a generalization of the approach in 131) is capable of solving the anti-windup problem whenever this is solvable. The effectiveness of the proposed scheme is shown on a simple example taken from the literature, in which the plant is a marginally stable linear system The anti-windup design problem has been qualitatively stated already from the 1950's both in the analog and in the digital control framework. However, the arisin solutions were at that time mainly application oriente! and not applicable to large classes of control systems. It was only in the 1980's that some design techniques ap plicable to large classes of control systems were formalized, although the issue of performance characterization and improvement was still mostly unsolved. An interestin survey of these techniques can be found in 141. Anotier Dhenomenon that is often found in coninnction