Nuclear Power Plant Instrumentation Fault Detection Using Fuzzy Logic

Table 1

A simple set of rules for signal noise assessment.

Rule	RMS value	Zero-crossing rate	Signal noise status
1	Low	Infrequent	Normal
2	Ordinary	Infrequent	Noisy
3	Zero	Infrequent	Suspect
4	Low	Infrequent	Suspect
5	Elevated	Frequent	Very Noisy