Numerical Key Performance Indicators for the Validation of PHM Health Indicators with Application to a Hydraulic Actuation System
Article dans une revue avec comité de lecture
Author
LAMOUREUX, BenjaminMASSE, Jean-Rémi 
MECHBAL, NazihAbstract
In order to perform Prognostic and Health Management (PHM) of a given system, it is necessary to define some relevant variables sensitive to the different degradation modes of the system. Those variables are named Health Indicators (HI) and they are the keystone of PHM. However, they are subject to a lot of uncertainties when computed in real time and the stochastic nature of PHM makes it hard to evaluate the efficiency of a HI set before the extraction algorithm is implemented. This document introduces Numerical Key Performance Indicators (NKPI) for the validation of HI computed only from data provided by numerical models in the upstream stages of a PHM system development process. In order to match as good as possible the reality, the multiple sources of uncertainties are quantified and propagated into the model. After having introduced the issue of uncertain systems modeling, the different NKPI are defined and eventually an application is performed on a hydraulic actuation system of an aircraft engine.
Files in this item
Related items
Showing items related by title, author, creator and subject.
-
Communication avec acte; ;MECHBAL, Nazih (IEEE, 2012)
This paper focuses on the monitoring of the fuel system of a turbofan which is the core organ of an aircraft engine control system. The paper provides a method for real time on-board monitoring and on-ground diagnosis of ...
-
Article dans une revue avec comité de lecture; ;MECHBAL, Nazih (Elsevier, 2014)
To increase the dependability of complex systems, one solution is to assess their state of health continuously through the monitoring of variables sensitive to potential degradation modes. When computed in an operating ...
-
Communication avec acte; ;MECHBAL, Nazih (IEEE, 2012)
This document provides a method for on-board monitoring and on-ground diagnosis of a hydromechanical actuation loop such as those found in aircraft engines. First, a complete system analysis is performed to understand its ...
-
Article dans une revue avec comité de lecture; ;MECHBAL, Nazih (2014)
The aircraft engines manufacturing industry is subjected to many dependability constraints from certification authorities and economic background. In particular, the costs induced by unscheduled maintenance and delays and ...
-
Diagnostics of an Aircraft Engine Pumping Unit Using a Hybrid Approach based-on Surrogate Modeling Communication avec acte; ;MECHBAL, Nazih (IEEE PHM, 2013)
This document introduces a hybrid approach for fault detection and identification of an aircraft engine pumping unit. It is based on the complementarity between a model-based approach accounting for uncertainties aimed at ...