Controller validation

The unfalsified control concept provides a theoretical basis for directly v alidating closed-loop controller performance from open-loop experimental da ta, or even from closed-loop data acquired while another controller was in the feedback loop. It allows this to be accomplished without making any pri or assumptions about the plant or noise. This approach to experimental cont roller validation avoids the conservatism inherent in indirect two-step val idation approaches that require one to first identify a plant model and unc ertainty-bounds from experimental data before analysing control system robu stness. Controller validation is shown to be the feedback generalization of open-loop model validation concepts that form the basis of various control -oriented system identification theories. Copyright (C) 2001 John Wiley & S ons, Ltd.