Rotary part online detection balance adjusting device and method

The invention discloses a rotary part online detection balance adjusting device and method. The rotary part online detection balance adjusting device comprises a vibration data acquisition module, a signal processing feedback control module and an automatic leveling module. The vibration data acquisition module comprises a laser displacement sensor, a pressure sensor, a pressure strain gauge and an NI acquisition card; the stress strain gauge is arranged on a bearing seat outside a bearing outer ring and electrically connected with the pressure sensor, the pressure sensor is connected with the signal processing feedback control module, the laser displacement sensor located above a shaft detects vibration signals on the shaft, and signal data are transmitted to the signal processing feedback control module through the NI acquisition card. Rectangular signals collected by the laser displacement sensor located on the left side of the rotating part are transmitted to the signal processing feedback control module