Abnormality diagnosing system for mechanical equipment

Details Abnormality diagnosing system for mechanical equipment Abnormality diagnosing system for mechanical equipment

2005-10-17

2009-12-29

Feliciano, Eliseo Ramos (Department: 2857)

Data processing: measuring, calibrating, or testing

Measurement system

Performance or efficiency evaluation

C702S033000, C702S056000, C702S077000, C702S182000, C073S593000, C073S602000, C073S659000, C073S660000

Reexamination Certificate

active

07640139

ABSTRACT:
Provided are an envelope processor103, for obtaining an envelope for a detected signal; a FFT unit104, for converting the envelope into a frequency spectrum; a peak detector105, for smoothing the frequency spectrum by calculating a moving average, for further performing smoothing and differentiation for the spectrum, and detecting, as peaks, frequency points at which a sign of a differential coefficient is changed from positive to negative, for extracting peaks having a predetermined threshold value or greater, and for sorting the extracted peaks and detecting upper peaks; and a diagnosis processor T, for diagnosing an abnormality based on the detected peaks.

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