A Fault Isolation Method Based on Analytical Redundancy Relations for Spacecraft Propulsion System


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Based on time-varying characters of spacecraft propulsion system, which generates tremendous difficulty to establish diagnostic criteria artificially, the fault isolation method based on Analytical Redundancy Relations (ARRs) generating from Diagnostic Bond Graph (DBG) has been proposed. The ARRs for Spacecraft Propulsion System are built on time-invariant structural characters, which can overcome the challenges from artificially establishing time-varying diagnostic criteria beforehand. By the tendency analysis of the residuals of ARRs, the fault signature matrix can be established. Then faults are isolated by comparison of observed signature and fault signature. Through the analysis of isolation results of a spacecraft propulsion system, it shows that ARRs is valid and practicable at fault isolation with rapid rates.



Edited by:

Amanda Wu




X. H. Peng et al., "A Fault Isolation Method Based on Analytical Redundancy Relations for Spacecraft Propulsion System", Applied Mechanics and Materials, Vol. 232, pp. 331-336, 2012

Online since:

November 2012




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