RT Journal Article
SR 00
ID 10.1016/j.arcontrol.2013.03.002
A1 Castillo López, Angela
A1 Zufiria Zatarain, Pedro Jose
T1 Fault isolation schemes for a class of continuous-time stochastic dynamical systems
JF Annual Reviews in Control
YR 2013
FD 2013-04
VO 37
IS 1
SP 43
OP 55
AB 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.
PB Elsevier
SN 1367-5788
LK http://oa.upm.es/26836/
UL http://www.sciencedirect.com/science/article/pii/S1367578813000047