On an identification problem arising in robust adaptive control

Abstract

A plant is assumed to have both parametric uncertainty and nonparameterized dynamics. The nonparameterized dynamics are characterized as a stable factor perturbation with a known frequency-domain magnitude bound. A nonconservative bound on the finite-time energy of the perturbation output is constructed in real-time. The bound is used to achieve robust monotonic parameter convergence of a model reference adaptive controller.