基于能量算子解调算法的轴系扭振的测量

Shafting torsional vibration can be seen a torsional vibration signal modulating the phase of the uniform rotation shaft,so phase demodulation of the vibration signal collected from the rotating shaft can get the torsional vibration signal. This article uses the energy operator method to demodulate the phase and frequency of the shafting vibration signal based on Hilbert transform principle used in the shafting torsional vibration measurement,not only separates out of the torsional vibration signal and instantaneous shock process accurately, also generates very small errors. The simulation experiment shows that this method has a good effect on the separation and measurement.