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Fault detection of ball screw-based electromechanical actuators using electrical, ultrasound and accelerometer sensors

Ismail, Mohamed A.A. and Windelberg, Jens (2018) Fault detection of ball screw-based electromechanical actuators using electrical, ultrasound and accelerometer sensors. International Journal of Condition Monitoring, 8 (2), pp. 52-57. The British Institute of Non-Destructive Testing. ISSN 2047-6426

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Official URL: http://www.bindt.org/publications/ijcm-journal/

Abstract

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

Item URL in elib:https://elib.dlr.de/119977/
Document Type:Article
Title:Fault detection of ball screw-based electromechanical actuators using electrical, ultrasound and accelerometer sensors
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Ismail, Mohamed A.A.Mohamed.Ismail (at) dlr.deUNSPECIFIED
Windelberg, JensJens.Windelberg (at) dlr.deUNSPECIFIED
Date:1 May 2018
Journal or Publication Title:International Journal of Condition Monitoring
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Volume:8
Page Range:pp. 52-57
Publisher:The British Institute of Non-Destructive Testing
ISSN:2047-6426
Status:Published
Keywords:Vibration fault diagnosis, ball bearing, ball screw
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:23 May 2018 10:34
Last Modified:01 Dec 2018 19:53

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