| 摘要 |
PURPOSE:To automatically diagnose and indicate abnormally unbalanced vibrations generated during operation by extracting and judging the vibration component synchronizing to the rotation frequency from the vibrations detected from a rotary machine. CONSTITUTION:Vibrations of rotors 11-13 during operation are detected at vibration detecters 31-36 installed near bearings 21-26, amplified at a vibration meter 41, A/D converted 52 via a high-speed data input device 51, and introduced to CPU 53. On the other hand, signals of one pulse per rotation from a detecter 37 is converted 42 to sine wave, and introduced to CPU 53 and divided signal via a tachometer 43 is introduced to the CPU 53 as phase reference signals of vibration components. Then frequency analysis of vibration wave and calculation based on the results of frequency analysis are carried out at CPU 53, and the results are shown on CRT in a CRT terminal 55. |
