Abnormality diagnosis apparatus, abnormality diagnosis method, and computer readable recording medium
AssigneeNEC Corporation
InventorsYu KIYOKAWA, Shigeru KASAI, Shohei KINOSHITA
Life of this patent
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Abstract
An abnormality diagnosis apparatus including: a feature amount calculation unit 2 configured to perform, on mode vectors generated based on vibration of a structure 20 measured by sensors 21, normalization of amplitude components and normalization for removing an initial phase from phase components, and calculate amplitude feature amounts corresponding to the amplitude components and phase feature amounts corresponding to the phase components; and an abnormality detection unit 3 configured to specify an abnormality in the structure 20 based on the amplitude feature amounts and the phase feature amounts.
Claims15
An abnormality diagnosis apparatus comprising:
- a feature amount calculation unit configured to perform, on mode vectors generated based on vibration of a structure measured by sensors, normalization of amplitude components and normalization for removing an initial phase from phase components, and calculate amplitude feature amounts corresponding to the amplitude components and phase feature amounts corresponding to the phase components;
- and
- an abnormality detection unit configured to specify an abnormality in the structure based on the amplitude feature amounts and the phase feature amounts.
An abnormality diagnosis method comprising:
- performing, on mode vectors generated based on vibration of a structure measured by sensors, normalization of amplitude components and normalization for removing an initial phase from phase components, and calculating amplitude feature amounts corresponding to the amplitude components and phase feature amounts corresponding to the phase components;
- and
- specifying an abnormality in the structure based on the amplitude feature amounts and the phase feature amounts.
A non-transitory computer readable recording medium that includes an abnormality diagnosis program recorded thereon, the abnormality diagnosis program including instructions causing a computer to execute:
- performing, on mode vectors generated based on vibration of a structure measured by sensors, normalization of amplitude components and normalization for removing an initial phase from phase components, and calculating amplitude feature amounts corresponding to the amplitude components and phase feature amounts corresponding to the phase components;
- and
- specifying an abnormality in the structure based on the amplitude feature amounts and the phase feature amounts.
Dependencies are inferred from the claim text.