FIELD: measurement engineering.
SUBSTANCE: electric signal, being proportional to object's vibration, is conversed into spectrum. Amplitude components of spectrum are memorized and are subject to comparison with preliminary specified critical and evaluation levels. Technical condition is determined from results of comparison and period of non-failure operation of object being tested is determined. Prior to beginning of measurement of main signal, values of signals of associate factors are measured and memorized, namely period of actual operation of object and average meaning of environment temperature during actual operation of object. After that values of preliminary specified critical and evaluation levels of amplitude components are subject to correction depending on meanings of preliminary measured signals of associate factors.
EFFECT: improved truth of diagnostics.
1 dwg
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