On-line robust parameter identification for parabolic systems

In this paper a robust scheme for the adaptive parameter identification of parabolic distributed parameter systems is developed. Results from the fini te-dimensional treatment of the parameter projection method and sigma (sigm a) modifications to the standard adaptation rules are extended to infinite- dimensional systems. For the class of systems under study, modifications to these standard parameter adaptation rules were deemed necessary in order t o account for the additional mathematical subtleties that arise when dealin g with infinite-dimensional systems. Copyright (C) 2001 John Wiley & Sons, Ltd.