K. Poole, M. Raeth, F. Thielecke, C. Mädiger

In the present paper, the effect of internal leakages of an aircraft hydraulic systems electric motor pump is investigated model-based. This investigation is performed in the context of the development of a fault diagnosis system for aircraft hydraulic power distributions systems. For that reason, a detailed physics-based model of the pump is developed in AMESim. This allows simulating the effect of the deterioration of specific components of the pump. Based on the model, it is analysed how the individual faults of the pump components that lead to internal leakages affect the overall pump performance. For this, the pump characteristic line is considered. It is shown that the pump characteristic line can be used to diagnose the extent of internal leakages. A concept for a robust and cost-efficient on-board diagnosis system is presented. In this context, sensor implementation aspects are discussed as well as the operating points of the pump, which are required for the diagnosis of the pumps internal leakages.

Deutscher Luft- und Raumfahrtkongress 2011

Conference Paper

englisch

21,0 x 29,7 cm, 7 Seiten

Deutscher Luft- und Raumfahrtkongress Tagungsband - Manuskripte, 2011, 2011; S.647-653; 2011; Deutsche Gesellschaft für Luft- und Raumfahrt - Lilienthal-Oberth e.V., Bonn

NA

hydraulik, fehlerdiagnose

Bestellbar

2011