METHOD FOR MONITORING MACHINERY HEALTH BASED ON FICTITIOUS FREQUENCY RESPONSE FUNCTION AND SYSTEM USING THE SAME

摘要

A vibration sensor that measures vibration signals at four or more points and measures vibration signals at two points as one pair and measures vibration signals in a plurality of different pairs to determine the position of the sensor attachment The present invention relates to a method of diagnosing an abnormality of a rotating machine based on a frequency response function, I) measuring vibration signals at two points; Ii) calculating a standard deviation of the vibration signals of the two points measured in i); Iii) calculating a covariance from the two-point vibration signals measured in i); Iv) calculating a correlation coefficient from the values calculated in ii) and iii); And (v) selecting a position of a sensor to be mounted at two points from the correlation coefficient calculated in (iv) above. In order to diagnose the rotating machine abnormality, the sensors for measuring the vibration signals of the two points are installed at the optimum positions, so that the abnormality of the rotating machine can be diagnosed more stably and accurately. .