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Flight demonstration of redundancy management algorithms for a skewed array of inertial sensors (1988)

Bailey, M. L. ; Motyka, P. R. ; Morrell, F. R.

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Publication Date: 2019-06-28

Description: Flight test results for two fault-tolerance algorithms developed for a redundant strapdown inertial measurement unit consisting of four 2-DOF gyros and accelerometers mounted on the faces of a semioctahedron are presented. Although both algorithms provided timely detection and isolation of flight control level failures, the generalized likelihood test algorithm provided more timely detection and isolation of low-level sensor failures than the edge vector test algorithm. The generalized likelihood test produced a false isolation for the case of a dual low-level failure applied to the sensitive axes of an accelerometer. Both of the algorithms were shown to provide dual fail-operational performance for the skewed array of inertial sensors.

Keywords: AIRCRAFT INSTRUMENTATION

Type: AIAA PAPER 88-4434

Format: text

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