Method for generating a minimum set of analytical redundancy relations for the diagnosis of systems
AssigneeFondazione Istituto Italiano Di Tecnologia
InventorsAmir FIJANY, Farrokh VATAN
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Abstract
A method is described for generating a minimal set of Analytical Redundancy Relations representing a system to which a plurality of sensors is associated for the observation of variables indicative of operating conditions and adapted to enable detection and isolation of faults. The minimal set of Analytical Redundancy Relations is derived from a complete set of Analytical Redundancy Relations in implicit form, for which an associated binary Fault Signature Matrix is specified, and comprises the relations associated to a minimal subset of rows of the original matrix, which has the same number of non-zero columns and the same number of distinct columns as the original matrix.
Claims9
A computer-implemented method for generating a set of Analytical Redundancy Relations representing a system with which a plurality of sensors is associated for the observation of variables indicative of operating conditions and adapted to enable detection and isolation of faults,
- the system being describable by a model based on the arrangement of components of said system, including a set of Primary Relations between inputs and outputs of each component, indicative of its operating function,
- wherein each Analytical Redundancy Relation represents the logical relations between a subset of observable variables of the system and a corresponding subset of support components of the system,
- including:
- a) the generation of a complete set of Analytical Redundancy Relations for the system, in implicit form;
- b) the determination of an original binary Fault Signature Matrix associated with said complete set of Analytical Redundancy Relations having size m×n where m is the power of the complete set of Analytical Redundancy Relations and n is the number of the system components;
- c) the determination of at least one submatrix of said original signature matrix, having a minimal subset of rows of the original matrix such that said submatrix has the same number of non-zero columns and the same number of distinct columns as the original matrix;
- and
- d) the generation of a subset of Analytical Redundancy Relations of said complete set, including the Analytical Redundancy Relations associated to the rows of the signature submatrix determined in step (c).
Dependencies are inferred from the claim text.