ABNORMALITY DETECTION DEVICE, DIFFERENCE VECTOR DISPLAY DEVICE, ROTARY MACHINE SYSTEM, ABNORMALITY DETECTION METHOD, AND PROGRAM

摘要

An abnormality detection device includes a vibration measurement value acquisition unit configured to acquire a measurement value of vibration of a rotation shaft, which is measured by each of shaft vibration sensors provided to be spaced apart in a diameter direction of the rotation shaft with respect to an outer circumferential surface of the rotation shaft at positions spaced apart in a shaft direction of the rotation shaft, for each rotation angle of the rotation shaft, a vibration vector calculation unit configured to calculate a vibration vector indicating a rotation angle at which a vibration of the rotation shaft is a maximum and a magnitude of the vibration on the basis of the measurement value of the vibration, and an estimation unit configured to estimate an abnormality occurrence position in the shaft direction of the rotation shaft on the basis of a time change in the vibration vector.