Application of Analytical Redundancy

Document Number: 851825

Date Published: October 1985

Author(s):
R. C. Hendrick - Honeywell Inc.

Abstract:
Analytical redundancy involves the use of diagnostic routines in software to detect a fault in a set of sensor signals. The fault detection algorithms and associated redundancy management structure are presented within. The DIGITAC application improved the mission reliability of existing dual mission-essential sensors by effecting a single-fail-operative capability. Flight safety was preserved for single sensors. Fault detection qualities of the diagnostics were satisfactory. False alarm problems required considerable redesign and tuning to properly model the processes. These problems were satisfactorily solved with the exception of diagnostic errors occurring during extreme turbulence (e.g., penetration of jetwash).

File Size: 372K
Product Status: In Stock

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