| 摘要 |
PROBLEM TO BE SOLVED: To provide an abnormality diagnostic system of a rotating apparatus, an abnormality diagnostic device of the same, and an abnormality diagnosis method of the same, capable of detecting in the noncontact state, the noise emitted from the rotating apparatus in abnormality diagnosis of the rotating apparatus, and diagnosing accurately an abnormality of the rotary apparatus. SOLUTION: Four speakers 8a-8d are installed on each center part of four sides of the outer periphery of an installation space 1, and the speakers 8a-8d output beacon signals set to have mutually different frequencies, as going toward the inner side of the installation space 1. A vibration sound emitted from the rotary apparatus 2a and the beacon signals are measured by the abnormality diagnostic device 9 at a measuring position. The measurement position is specified based on the beacon signals, and the sound pressure of the vibration sound measured at the measuring position is corrected to a sound pressure that is assumed as being acquired, if the sound pressure is measured at a reference position. Abnormality diagnosis of the rotating state of the rotary apparatus 2a is performed, on the basis of the effective value after the correction of the sound pressure . COPYRIGHT: (C)2011,JPO&INPIT
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