We consider the control of nonlinear systems in which parameters are uncertain and may
vary. For such systems the control must adapt to the parameter change to deliver closed …

We develop an adaptive control for a scalar system with nonlinear uncertainty. Specifically,
we consider scalar systems that are not stabilizable via a linear feedback and hence there …

In adaptive control the goal is to design a controller to control an uncertain system whose
parameters may be changing with time. Typically the controller consists of an identifier (or …

A classical question in adaptive control is that of convergence of the parameter estimates to
constant values in the absence of persistent excitation. We provide an affirmative answer for …

This paper deals with the adaptive control of dynamic systems with nonlinear
parametrization. When the states of a nonlinear system arc available and one or more of the …

This paper presents an adaptive control scheme for nonlinear systems that violates some of
the common regularity and structural conditions of current nonlinear adaptive schemes such …

The 1990 Grainger Lectures delivered at the University of Illinois, Urbana-Champaign,
September 28-October 1, 1990 were devoted to a critical reexamination of the foundations of …

After an examination of the restrictive assumptions that limit the applicability of existing
adaptive nonlinear control schemes, new adaptive regulation and tracking schemes are …

This paper presents a stabilizing adaptive controller for a nonlinear system depending
affinely on some unknown parameters. We assume only this system is feedback stabilizable …

An adaptive control design procedure for a class of nonlinear systems with both parametric
uncertainty and unknown nonlinearities is presented. The unknown nonlinearities lie within …