Several recent robust adaptive control schemes guarantee stability and residual tracking errors which are "small" in the mean for any bounded initial conditions, independent of any persistence of excitation condition. Since ...

One of the basic assumptions in stable model reference adaptive control is that the relative degree n* of the modeled part of the plant is known exactly and matches that of the reference model. The authors relax this ...

In this paper we present some useful properties of strictly positive real transfer matrices for both continuous and discrete-time linear time-invariant systems in the frequency and state space domains. Some of these ...

In an overparametrized model reference adaptive control system, the measured signal (t) cannot be persistently exciting (PE) for any bounded reference input r(t). The controller parameter vector for model-plant transfer ...

An adaptive control scheme is presented which has a simple structure and guarantees global stability of the closed-loop plant and asymptotic zero tracking error for a class of reference signals. The plants to be controlled ...

A complete procedure for generating and analysing robust model reference adaptive control schemes for multivariable plants is developed. The procedure consists of two parts: the first part involves the characterization of ...

A procedure for designing and analysing robust adaptive one-step-ahead minimum prediction error control schemes for discrete-time multivariable plants is given. A general robust adaptive law (GRAL) is developed for adjusting ...

In this note we give necessary and sufficient conditions in the frequency domain for rational matrices to be strictly positive real. Based on this result, the matrix form of the Lefschetz-Kalman-Yakubovich lemma is proved, ...