Method and system for vibration signal processing

Details Method and system for vibration signal processing Method and system for vibration signal processing

2007-03-22

2009-02-17

Raymond, Edward (Department: 2857)

Data processing: measuring, calibrating, or testing

Measurement system in a specific environment

Mechanical measurement system

C702S033000, C702S076000, C073S602000, C073S660000, C701S111000, C712S035000, C181S207000

Reexamination Certificate

active

07493220

ABSTRACT:
The present invention relates to a vibration signal processing method and system that can be used to account for situations where impact or impulse events are hidden in a normal vibration reading by low frequency vibrations and high frequency noise. In one preferred form, the method of the present invention comprises the steps of obtaining electrical vibration signals that represent mechanical vibrations of a machine (102-106), converting the electrical vibration signals into digital vibration samples (108), dividing the digital vibration samples into equal time intervals and determining the average absolute amplitude of the digital vibration samples for each time interval (110), generating a time waveform comprising the determined average amplitudes (112, 114), and processing the time waveform as if it were an independently-detected signal (116-120).

REFERENCES:
patent: 6526831 (2003-03-01), Ben-Romdhane
patent: 6668234 (2003-12-01), DiTommaso et al.
Shreve, ‘Signal Processing for Effective Vibration Analysis’, Nov. 1995, IRD Publication, pp. 1-11.
McInerny et al. , ‘Basic Vibation Signal Processing for Bearing Fault Detection’, Feb. 2003, IEEE Publication, vol. 46 No. 1, pp. 149-156.

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