Failure detection analyzer

Details Failure detection analyzer Failure detection analyzer

1978-02-22

1982-03-23

Myracle, Jerry W.

Measuring and testing

Vibration

Sensing apparatus

364518, 364565, G01M 1500

Patent

active

043206620

ABSTRACT:
A speed measuring device is provided for use as a diagnostic tool to analyze the sub-cyclic dynamic performance and to monitor the condition of moving elements within a mechanical or electromechanical system. Substantially instantaneous, absolute speed measurements are derived from elapsed time measurements between successive sensing of fixed, equal, position events such as generated by incremental position pulses of a shaft position encoder; said encoder being attached to one of the moving elements within the said system. An assessment of the dynamic performance and condition of the system is ascertained by comparing the speed profile with previous speed profiles obtained during normal system operation. Comparative differences in the said profiles provide an indication of changes of the driving and friction forces within the system which, in turn, can provide an indication of faulty elements.

REFERENCES:
patent: 3657922 (1972-04-01), Sibend
patent: 4050747 (1977-09-01), Ruhnau et al.
patent: 4064747 (1977-12-01), Rackliffe et al.
patent: 4071892 (1978-01-01), Genzling
patent: 4078252 (1978-03-01), Schoenfeld et al.
patent: 4179922 (1979-12-01), Bouverie et al.

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