Flight demonstration of redundancy management algorithms for a skewed array of inertial sensorsFlight 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.
Document ID
19880064722
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Morrell, F. R. (NASA Langley Research Center Hampton, VA, United States)
Bailey, M. L. (Planning Research Corp. Hampton, VA, United States)
Motyka, P. R. (Charles Stark Draper Laboratory, Inc. Cambridge, MA, United States)