Failure detection analyzer
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United States of America Patent
Stats
-
Mar 23, 1982
Grant Date -
N/A
app pub date -
Feb 22, 1978
filing date -
Feb 22, 1978
priority date (Note) -
Expired
status (Latency Note)
Importance
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.
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