%0 Journal Article
%@ 1367-5788
%A Castillo López, Angela
%A Zufiria Zatarain, Pedro Jose
%D 2013
%F upm:26836
%I Elsevier
%J Annual Reviews in Control
%N 1
%P 43-55
%T Fault isolation schemes for a class of continuous-time stochastic dynamical systems
%U http://oa.upm.es/26836/
%V 37
%X In this paper a new method for fault isolation in a class of continuous-time stochastic dynamical systems is proposed. The method is framed in the context of model-based analytical redundancy, consisting in the generation of a residual signal by means of a diagnostic observer, for its posterior analysis. Once a fault has been detected, and assuming some basic a priori knowledge about the set of possible failures in the plant, the isolation task is then formulated as a type of on-line statistical classification problem. The proposed isolation scheme employs in parallel different hypotheses tests on a statistic of the residual signal, one test for each possible fault. This isolation method is characterized by deriving for the unidimensional case, a sufficient isolability condition as well as an upperbound of the probability of missed isolation. Simulation examples illustrate the applicability of the proposed scheme.