Sensor Placement for Fault Diagnosis Using Graph of a Process

13th European Workshop on Advanced Control and Diagnosis

Sztyber, Anna^1

Institute of Automatic Control and Robotics, Faculty of Mechatronics, Warsaw University of Technology, Poland^1

关键词: Acyclic graphs;    Analytical process;    Causal graph;    Detectability;    Diagnostic systems;    Sensor placement;    Sensor placement methods;    Strongly connected component;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/783/1/012007/pdf
DOI  :  10.1088/1742-6596/783/1/012007

来源: IOP

【 摘 要 】

The quality of a diagnostic system strongly depends on the availability of appropriate measurements. In this work sensor placement method using Graph of a Process is introduced. Graph of a Process is a formalization of a causal graph useful in fault diagnosis. Faults are directly incorporated into the model. The necessary and sufficient conditions for fault detectability and isolability are formulated. The analysis is divided into acyclic graph search and calculations within strongly connected components. This method is applicable to the design of the instrumentation of diagnostic systems, when the analytical process model is unavailable.