RESEARCH ON THE PNEUMATIC LINE LENGTH IMPACT ON THE DYNAMIC PRESSURE MEASURING SYSTEM CHARACTERISTICS
Journal Title: Вісник Національного Авіаційного Університету - Year 2018, Vol 75, Issue 2
Abstract
Purpose: to do research on the pneumatic line length impact on the bandwidth of the useful signal and phase shift. Method: the processing of experimental data was carried out in MatLab environment, where was constructed the model of transient characteristic, and by using model was de termined amplitude-frequency and phase-frequency characteristics. Results: the paper considers the experimental results regarding the dynamic calibration of the pressure measurement systems. This system consists of a pressure sensor and a pneumatic line that connects the sensor and the inlet pr essure receiver. As a result of research, the amplitude- frequency and phase-frequency characteristics of the measur ing system were obtained for different values of the pneumatic line. The paper also specifies the recomme ndations how to select lengt hs of the pneumatic line from the pressure receiver to the senso r when measuring pressure pulsations. Conclusion: for the Motorola MPXV5004DP sensor, the studies have been carried out in order to determine the impact of the pneumatic line length on the bandwidth and phase shift. During resear ch, specific interrelations have been obtained. By means of these interrelations, it is possible to estim ate the limiting transmission frequency and the phase lag of the measuring system. The obtained data allow to pr ovide the correct planning of the experiment and to perform the high quality experiment on the investiga tion of the dynamic characteristics of the flow interacting with the streamlined object.
Authors and Affiliations
Sergii Ischenko, Marian Stetsivka, Volodymyr Radchenko
Keywords
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- EP ID EP510205
- DOI 10.18372/2306-1472.75.13117
- Views 126
- Downloads 0
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