Feed-forward observer-based intermittent fault detection

This paper provided an approach to design feed-forward observer for nonlinear systems with Lipchitz nonlinearity and bounded unknown inputs (disturbances/uncertainties) to ensure the sensitivity against intermittent faults. The proposed observer design guarantees the system error stability. Some var...

Full description

Saved in:
Bibliographic Details
Published in:CIRP journal of manufacturing science and technology 2017-05, Vol.17, p.10-17
Main Authors: Sedighi, T., Foote, P.D., Sydor, P.
Format: Article
Language:English
Subjects:
Adaptive threshold design
Error stability analysis
Feed-forward observer
Intermittent fault detection
Mass-spring-damper system
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:This paper provided an approach to design feed-forward observer for nonlinear systems with Lipchitz nonlinearity and bounded unknown inputs (disturbances/uncertainties) to ensure the sensitivity against intermittent faults. The proposed observer design guarantees the system error stability. Some variables and scalars are also introduced to design observer's parameters, which bring more degrees of flexibility available to the designer. The designed observer is used to propose a precision fault detection scheme including adaptive threshold design to detect intermittent faults. The efficiency of the considered approach is examined by the intermittent failure case in the suspension system of a vehicle. Simulation results show that the accurate state estimation and fault detection are achieved successfully.
ISSN:1755-5817
1878-0016
DOI:10.1016/j.cirpj.2016.08.004