New results in fault latency modellingThe test design and results from assessment of the performance of the self-test program and the extent of fault latency in a redundant flight control system (FCS) are reported. Assembly language programming generated gate-level faults directed to every avionics component. Details of the fault-simulation software are described, noting the input needed to match the five control-surface parameters managed by the FCS. Most faults were immediately detected, and component-level faults, occurring at pins, were more easily noted than gate-level faults. The results indicated that a 200-word self-test program is sufficient to obtain a fault coverage of 85 percent. Minor hardware changes are required to reach levels over 90 percent.
Document ID
19850032306
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Mcgough, J. G. (Bendix Corp. Southfield, MI, United States)
Swern, F. L. (Bendix Corp. Southfield, MI, United States)
Bavuso, S. (NASA Langley Research Center Hampton, VA, United States)