| 摘要 |
PROBLEM TO BE SOLVED: To provide a gear abnormality diagnostic apparatus using a gear diagnostic technique and its diagnostic method capable of accurately detecting and determining abnormality of a single gear item due to dents in a tooth plane of a gear and failures in the degree of roughness (surface roughness) in the tooth plane on the basis of time-series analysis of gear vibration signals when the gear is engaged and driven. SOLUTION: Vibration and acceleration signals generated are measured when the single gear item is driven to perform time-series analysis on the vibration and acceleration signals. By determining a crest factor and the kurtosis of the residual between their estimated signals and observed signals and monitoring their changes, it is possible to determine (diagnose) gear abnormalities such as very small dents, etc. COPYRIGHT: (C)2009,JPO&INPIT
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