New results for sensor placement with diagnosability purpose.
Résumé
Maintenance and diagnosis of complex systems are common activities in the industrial world. Technological advances have led to a continuously increasing complexity of industrial systems. This complexity, which is due to an increasing number of components reduces in turn the reliability of plants. Therefore, fault diagnosis is becoming a growing field of interest. But fault diagnosis relies on sensors: efficient fault diagnosis procedures require a relevant sensor placement. This paper presents fundamental results for sensor placement based on diagnosability criteria. These results contribute to the design of sensor placement algorithms, which satisfies specifications composed of several sets: the components for which faults have to be isolable, the components for which faults have to be detectable but not necessarily isolable and the components for which faults have do not need to be detected.