Patent ID: 8521487
Filing Date: 2013-08-27
Classification: G06F

Abstract:
1. A computer-implemented method for generating a set of Analytical Redundancy Relations representing a system with which a plurality of sensors are associated for 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 an operating function thereof, wherein each Analytical Redundancy Relation represents logical relations between a subset of observable variables of the system and a corresponding subset of support components of the system, including: a) generating a complete set of Analytical Redundancy Relations for the system, in implicit form; b) determining an original binary Fault Signature Matrix associated with said complete set of Analytical Redundancy Relations having size m×n where m is a power of the complete set of Analytical Redundancy Relations and n is a number of the system components; c) determining 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) generating a subset of Analytical Redundancy Relations of said complete set, including the Analytical Redundancy Relations associated to rows of the signature submatrix determined in step (c); wherein the determination of at least one submatrix of the original signature matrix includes the operations of: where x the submatrix of the original signature matrix being determinable by transposing a matrix which is the product of the first matrix with the binary vector.