Adaptive parameter estimators for a class of non-linear systems

Adaptive algorithms for parameter estimation of a class of non-linear systems are developed in this paper. The salient feature of these algorithms is that there is no need to solve any Lyapunov equation, which may prove useful in dealing with high-dimensional systems. Since the algorithms are constructed by using the accessible system signals, the derivatives of these signals are not required. It is shown that the presented algorithms include the existing method as a special case. A numerical example is included to demonstrate the method. © 1997 by John Wiley & Sons, Ltd.