Dynamic Modeling of Pressure Pipelines and Signal Reconstruction

In order to improve the dynamic pressure measurement´s accuracy with pressure pipelines, the dynamic modeling of equal diameter pressure pipelines and signal reconstruction were studied. Through the theoretic analysis, dynamic calibration with SPG and parameters identification, more accurate dynamic models of the equal diameter pressure pipelines were upbuilded. With the dynamic models and FFT method, measurement output signals of the sinusoidal pressure and step pressure were reconstructed. The uniformity of signals´ waveform compared to the actual pressure and the measurement´s accuracy were all improved obviously.