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Fault detection of bearing defects for ballscrew based electro-mechanical actuators

Ismail, Mohamed AA. and Windelberg, Jens (2017) Fault detection of bearing defects for ballscrew based electro-mechanical actuators. In: First World Congress on Condition Monitoring (WCCM 2017). First World Congress on Condition Monitoring (WCCM 2017), 13.-16. Juni 2017, London, UK.

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Abstract

Electro-mechanical actuators (EMAs) are considered a promising energy-efficient technology for actuating flight controls of future aircrafts. When it comes to aerospace systems, the EMAs degradation should be checked in regular maintenance events or through condition-based maintenance. Ball bearings have a significant failure rate for flight control EMAs and they are usually monitored by vibration noise. A challenge for detecting bearing faults, using state-of-the-art industrial methods, is the presence of a ballscrew mechanism that produces a nominal vibration noise similar to that of faulty bearings. No prior research has investigated this problem. This paper explores vibration noises generated from a set of healthy and faulty bearings included in a typical ballscrew EMA. In addition, a method is introduced for evaluating fault diagnosis performance for different time and frequency vibration features. The technique has been validated on an EMA actuator at the German Aerospace Center (DLR).

Item URL in elib:https://elib.dlr.de/112786/
Document Type:Conference or Workshop Item (Lecture)
Title:Fault detection of bearing defects for ballscrew based electro-mechanical actuators
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Ismail, Mohamed AA.mohamed.ismail (at) dlr.deUNSPECIFIED
Windelberg, JensJens.Windelberg (at) dlr.deUNSPECIFIED
Date:13 June 2017
Journal or Publication Title:First World Congress on Condition Monitoring (WCCM 2017)
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:Vibration fault diagnosis, ball bearing, ball screw
Event Title:First World Congress on Condition Monitoring (WCCM 2017)
Event Location:London, UK
Event Type:international Conference
Event Dates:13.-16. Juni 2017
Organizer:BINDT (British Institute of Non-Destructive Testing)
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:fixed-wing aircraft
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Systems and Cabin
Location: Braunschweig
Institutes and Institutions:Institute of Flight Systems > Safety Critical Systems&Systems Engineering
Deposited By: Ismail, Eng. Mohamed AA
Deposited On:20 Jun 2017 11:11
Last Modified:31 Jul 2019 20:10

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