ASSESSMENT OF OBSERVABILIТY FOR ТНЕ POINTS OF А PIPELINE CIRCUIT OF ТНЕ DIGITAL COMPONENTS IN SAFETYRELATED SYSTEMS
DOI:
https://doi.org/10.15673/0453-8307.5/2015.51952Keywords:
Safetycritical system Digital component Pipeline circuit Нidden fault Potentially hazardous points Model of the activated pathAbstract
А problem of the hidden faults without solving of which the fault tolerant structure of the digital сотponents does not guarantee function safety of the safetycritical systems is considered. The problem is shown in the potentially hazardous circuit points, which in а normal mode сап accumulate the hidden faults reducing the fault tolerance of the digital component at transition to ап emergency mode of the system operation. А model of the activated path for pipeline circuit of the digital component is offered. It allows determining input data for calculation of point observability in modes of the system. А method of potentially hazardous point identification for pipeline circuit of the digital component is developed.References
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