Flight test results of a vector-based fault-tolerant algorithm for a redundant strapdown inertial measurement unit are presented. Because the inertial sensors provide flight-critical information for flight control and navigation, failure detection and isolation is developed in terms of a multi-level structure. Threshold compensation techniques for gyros and accelerometers, developed to enhance the sensitivity of the failure detection process to low-level failures, are presented. Four flight tests, conducted in a commercial transport type environment, were used to determine the ability of the failure detection and isolation algorithm to detect failure signals, such a hard-over, null, or bias shifts. The algorithm provided timely detection and correct isolation of flight control- and low-level failures. The flight tests of the vector-based algorithm demonstrated its capability to provide false alarm free dual fail-operational performance for the skewed array of inertial sensors.


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    Title :

    Flight test results of a vector-based failure detection and isolation algorithm for a redundant strapdown inertial measurement unit


    Contributors:

    Publication date :

    1988-05-01


    Type of media :

    Conference paper


    Type of material :

    No indication


    Language :

    English






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    Vodicheva, L. V. / Scientific Council of the Academy of Sciences on the Problems of Motion Control and Navigation / State Research Center of the Russian Federation; Central Scientific and Research Institute "Elektropribor" et al. | British Library Conference Proceedings | 1999


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