STATE ESTIMATION FOR NONLINEAR UNCERTAIN SYSTEMS - A DESIGN BASED ON PROPERTIES RELATED TO THE UNCERTAINTY BOUND

Observers for non-linear uncertain dynamical systems are proposed. The non- linearity and uncertainty in the systems are assumed to be bounded. The bound is however unknown. The observer contains an adaptive scheme designed to accommodate the uncertainty. The design of the observer is only based on certain functional properties of the bound. No statistical information about the uncertainty needs to be assumed or utilized. © 1990 Taylor and Francis Group, LLC.