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Model-based Fault Detection and Isolation Method in a Network of Digital State Machines

There are increasing demands for the reliability and safety of the output information of radio-electronic systems. One effective method is to introduce diagnostics instruments providing detection and isolation of faulty components in realtime operating mode. It is clear that synthesizing diagnostic devices for complex systems consisting of a large number of functional nodes requires more analytical and hardware redundancy. In this paper, model-based fault detection and isolation method for digital electronic systems is considered. A mathematical model of these systems is described as a network of digital machines. It is shown that using diagnostic network model allows us to reduce of introduced analytical and hardware redundancy.