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Application of Adaptive Thresholds in Robust Fault Detection of an Electro-Mechanical Single-Wheel Steering Actuator

Ho, Lok Man (2012) Application of Adaptive Thresholds in Robust Fault Detection of an Electro-Mechanical Single-Wheel Steering Actuator. 8th IFAC Symposium on Fault Detection, Supervision and Safety of Technical Processes, 29.-31. Aug. 2012, Mexico City, Mexico.

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Abstract

A fault detection scheme has been developed for an electromechanical steering actuator under closed-loop control. The closed-loop system is modeled as a 2nd order system with bounded parameter uncertainties given by the performance specifications. The residual is generated using an observer-based method. A dynamic adaptive threshold is generated based on the inputs and the measured system outputs to account for the residual deviating from zero under fault-free conditions due to parameter uncertainties. In addition to this, the error of the controlled system output due to a disturbance is handled by the residual evaluation function. This method is tested on a simple simulation as well as experimental data.

Item URL in elib:https://elib.dlr.de/79730/
Document Type:Conference or Workshop Item (Speech)
Title:Application of Adaptive Thresholds in Robust Fault Detection of an Electro-Mechanical Single-Wheel Steering Actuator
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Ho, Lok ManLok.Ho (at) dlr.deUNSPECIFIED
Date:29 August 2012
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:model-based fault detection, adaptive threshold, steer-by-wire, parameter uncertainty
Event Title:8th IFAC Symposium on Fault Detection, Supervision and Safety of Technical Processes
Event Location:Mexico City, Mexico
Event Type:international Conference
Event Dates:29.-31. Aug. 2012
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space Technology
DLR - Research area:Raumfahrt
DLR - Program:R SY - Technik für Raumfahrtsysteme
DLR - Research theme (Project):R - Vorhaben Intelligente Mobilität
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of System Dynamics and Control > Vehicle System Dynamics
Deposited By: Ho, Lok Man
Deposited On:14 Dec 2012 11:18
Last Modified:31 Jul 2019 19:39

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