Data Validation of an Instrumentation System Using the Parity Space Approach – Application to the Aerospace Area

Abstract This paper is concerned with the problem of data validation of an instrumentation system. The fault diagnosis method used for the validation is based on the principle of the parity space approach. Residuals are generated thanks to the Analytical Redundancy Relations ARR given by the model and the important number of sensors. The additional concept of residuals structuration is necessary to isolate the detected faults. Finally, data validation task consists in isolating the failing data and in sending only the valid information to control system. An application to an aerospace system illustrates the proposed algorithm.

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