The pressure pulsation induced by the pumped periodic pulsation fluid is the main factor of causing fluid resonance and stimulating pipelines vibrations and noise.
泵输出的周期性脉动流体的压力脉动，是引起流体谐振、激励管路振动和噪声的主要原因。
2
By the analysis, we can obtain the phase change process to cause the torque pulsation primary factor theoretically, and introduced that reduced the phase change torque pulsation the method.