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- W9303199 abstract "The validation of signals is a technique wich integrates information from redundant and from functionally diverse sensors to provide highly reliable information to operating crews and to automatic controllers. Signal validation is generally performed by like-sensor comparisons (direct redundancy). When the increase of sensors is impossible, we use in preference analytical redundancy. Analytical redundancy refers to the physical relationships, such as conservation of mass or conservation of energy, that exist among the many variables being measured in a system. These validation techniques must be implemented to increase systems reliability and to facilitate detection of failures. This paper presents two methods of detection and location of mesaurement failures : the first is the standardized imbalance residuals approach and the second is the approach based on standardized least square residuals. These techniques are presented by using linear models that we extend to nonlinear models. We assume that all the variables are measured (redundant system), that the measurement errors are ruled by a zero mean normal distribution and known variances, and that the process model is correct." @default.
- W9303199 created "2016-06-24" @default.
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- W9303199 date "1990-09-17" @default.
- W9303199 modified "2023-10-02" @default.
- W9303199 title "Detection of bias in measurement using analytical redundancy" @default.
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