Measuring and testing – Vibration – Sensing apparatus
Patent
1986-07-14
1987-06-02
Ciarlante, Anthony V.
Measuring and testing
Vibration
Sensing apparatus
G01N 2904
Patent
active
046693157
ABSTRACT:
Disclosed is a rotating machinery diagnosis system with an AE technique, which comprises: an AE sensor mounted on a rotary machine for sensing an acoustic signal of the rotary machine; envelope detector means for obtaining an envelope signal from the acoustic signal from the AE sensor; waveform-feature processor means for performing signal processing so as to detect a feature of waveform of an output waveform signal from the envelope detector means; feature decision means for judging whether the feature of waveform belongs to a continuous type or a burst type and/or to a rotation-synchronous type or a rotation-asynchronous type on the basis of an output signal from the waveform-feature processor means; and diagnostic output means for outputting and displaying an output signal from the feature decision means, whereby it is possible to perform judgement simultaneously as to a plurality of kinds of abnormality.
REFERENCES:
patent: 4377947 (1983-03-01), Matsushita et al.
patent: 4453407 (1984-06-01), Sato et al.
patent: 4478082 (1984-10-01), Sato et al.
patent: 4481819 (1984-11-01), Yoneyama et al.
Sato Ichiya
Yoneyama Takao
Ciarlante Anthony V.
Hitachi , Ltd.
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