Bearing abnormal sound detection control method and bearing vibration measuring instrument

Abstract

The invention discloses a bearing abnormal sound detection control method, comprising the following steps of: (1) determining an abnormal sound detection parameter F = f (PK i, RMS i), and setting F standard values corresponding to the abnormal sound of different degrees, wherein f (PK i, RMS i) refers to a function using the PK i and the RMS i as variables, the PK i is a bearing vibration characteristic parameter peak value, and the RMS i is a bearing vibration characteristic parameter effective value; (2) actually measuring the current vibration of the bearing, and obtaining a current bearing vibration characteristic parameter peak value PK and a current bearing vibration characteristic effective value RMS through the actual measurement; (3) calculating a current abnormal sound detection parameter F according to the current bearing vibration characteristic parameter peak value PK and the current bearing vibration characteristic effective value RMS; and (4) comparing the current abnormal sound detection parameter F with the F standard value to confirm whether the bearing is in abnormal state and confirm the abnormal degree of the sound. The method and the instrument provided by the invention solve the defect of mistake and omission in determination on the bearing abnormal sound caused by using the peak value for detection control in the current bearing vibration measuring instrument, and have very important significance in the filed of detection control of bearing abnormal sound.

Description

technical field [0001] The invention relates to the technical field of rolling bearing vibration measurement, in particular to a method for detecting and controlling abnormal noise of a bearing and a bearing vibration measuring instrument capable of realizing the function. Background technique [0002] Bearing vibration is the main source of noise. Abnormal sound is a noise or abnormal sound that is more uncomfortable to the ear than the average background noise. It can be reflected by the degree to which the peak value of the vibration signal exceeds the effective value. The smaller the abnormal sound; the more the excess, the louder the abnormal sound. In general, the vibration characteristics of the bearing can represent the noise characteristics of the bearing. The vibration signal of the bearing is a random vibration signal, and the abnormal sound is actually some spikes on the vibration waveform. [0003] The vibration and noise of the bearing comprehensively reflect ...

AI Technical Summary

Problems solved by technology

[0007] The first purpose of the present invention is to provide a method for detecting and controlling abnormal bearing noise, so as to solve the technical problem of misjudgment and missed judgment in current bearing vibration measuring instruments using peak detection to control bearing abnormal noise

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