| CPC G01M 13/028 (2013.01) [G01H 1/003 (2013.01); G05B 19/4065 (2013.01); G05B 2219/37435 (2013.01); G05B 2219/37534 (2013.01)] | 10 Claims |
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1. A vibration analysis apparatus comprising:
a memory to store first correspondence information indicating a correspondence between a change in a first rotation speed of a rotation mechanism and a change in a first vibration frequency corresponding to a first acceleration peak of acceleration of vibration in the rotation mechanism, for each first acceleration peak in a plurality of acceleration peaks used for calculation of a regression equation;
analysis circuitry to extract a second vibration frequency corresponding to a second acceleration peak of acceleration of vibration for each second acceleration peak in a plurality of acceleration peaks used for detecting an operational anomaly of the rotation mechanism, on a basis of vibration data indicating vibration of the rotation mechanism when vibration of the rotation mechanism is analyzed, and to calculate, for each second acceleration peak, a waveform area that is an area of a waveform of the second acceleration peak by integrating the second acceleration peak over a specific frequency section; and
anomaly determination circuitry to determine whether the operational anomaly occurs in the rotation mechanism for each second acceleration peak on a basis of the waveform area and a threshold for a corresponding second acceleration peak, wherein
the analysis circuitry identifies the first correspondence information stored in the memory that corresponds to the second acceleration peak based on the regression equation, tracks, in accordance with the first correspondence information identified, a change in the second vibration frequency due to a change in a second rotation speed when vibration of the rotation mechanism is analyzed, and calculates, for each second acceleration peak, the waveform area of the second acceleration peak corresponding to the second vibration frequency tracked.
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