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Modelling and Simulating the Pump of an Aerospace Electro-Hydrostatic Module for Fault Detection and Identification Purposes

[+] Author Affiliations
Jean-Charles Mare

INSA, Université de Toulouse, Toulouse, France

Garance Vinson, Thomas Prado

Messier-Bugatti-Dowty, SAFRAN, Vélizy-Villacoublay, France

Michel Combacau

CNRS LAAS, Université de Toulouse, Toulouse, France

Paper No. FPMC2014-7803, pp. V001T01A002; 10 pages
doi:10.1115/FPMC2014-7803
From:
  • ASME/BATH 2014 Symposium on Fluid Power and Motion Control
  • ASME/BATH 2014 Symposium on Fluid Power and Motion Control
  • Bath, United Kingdom, September 10–12, 2014
  • Conference Sponsors: Fluid Power Systems and Technology Division
  • ISBN: 978-0-7918-4597-4
  • Copyright © 2014 by ASME

abstract

This communication deals with the modelling and simulation of a fixed-displacement axial-piston pump used in aerospace electro-hydrostatic actuators. The pump model is developed in the LMS-AMESim simulation environment to support the development of fault detection and identification features. The model-based fault diagnosis method is introduced first and the modelling needs are addressed. Then, a system-level pump model is proposed with special considerations to model architecture. The different ways to improve the model’s realism are reviewed, in particular concerning energy losses (bearing friction, leakages in gaps), barrel force balance, piston back pumping, piston eccentricity and pump loading for tests. Finally, directions of research in system-level modelling of hydraulic effects are suggested.

Copyright © 2014 by ASME

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