Influence of network delays in residual computation
| Authors: | Llanos David, University of Girona, Spain
Colomer Joan, University of Girona, Spain
Melendez Joaquim, University of Girona, Spain
Staroswiecki Marcel, Ecole Polytechnique Universitaire de Lille, France |
|---|
| Topic: | 6.4 Safeprocess |
|---|
| Session: | Robust Fault Detection and Isolation |
|---|
| Keywords: | Fault detection and isolation, residues, data acquisition, time delay estimation and dynamic programming |
|---|
Abstract
A challenging problem that motivates this work is the network delay effects in residual computation. Residuals are assumed to be identically zero in fault-free situations whereas deviations from zero alert the presence of fault in the system. In practice residuals are not identically zero due to various factors(measurements noises, modelling uncertainties, delays, and so on). This work is focused on the study of the availability of data, due to delays in the communication network, to compute residuals. An optimal dynamic alignment of data in a time window (Dynamic Time Warping) is proposed and tested to reduce errors when computing residuals.
