Robust hybrid control incorporating over-saturation

A switching controller aimed at dealing with a class of uncertain systems s ubject to input saturation is presented. The switching strategy is such tha t a pre-specified level of over-saturation is allowed, forcing the input de liberately into saturation. The goal of this method is to use the full auth ority of the available control. The proposed scheme allows for, up to, 100% over-saturation. Under these conditions, robust stability of the hybrid sc heme is established. (C) 1999 Elsevier Science B.V. All rights reserved.