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Research on high precision flow control technology of low speed wind tunnel air supply system

Autor(en):


Medium: Fachartikel
Sprache(n): Englisch
Veröffentlicht in: Journal of Physics: Conference Series, , n. 1, v. 2724
Seite(n): 012007
DOI: 10.1088/1742-6596/2724/1/012007
Abstrakt:

Aiming at the shortcomings of traditional analog control valves and digital valves, a high-pressure air supply system with accurate flow control is designed. Firstly, the ER5000 controller and pilot proportional valve drive several diaphragm reducing valves to achieve the preliminary adjustment of air pressure. Secondly, a needle valve based on the PCM digital valve and equal percentage flow characteristics is used to achieve accurate control of gas flow. Then, the Venturi flow meter with a honeycomb and damping network is used to accurately measure the airflow. Finally, a PID flow control algorithm based on nonlinear self-tuning is proposed. The results show that the flow regulation range of the system reaches 0.1∼8 kg/s, the absolute control accuracy is better than ±3 g/s, and the relative control accuracy is better than ±0.04%. Moreover, the system has the characteristics of short regulation time, small overshoot, and good dynamic performance, which can achieve strong support for wind tunnel air supply tests.

Structurae kann Ihnen derzeit diese Veröffentlichung nicht im Volltext zur Verfügung stellen. Der Volltext ist beim Verlag erhältlich über die DOI: 10.1088/1742-6596/2724/1/012007.
  • Über diese
    Datenseite
  • Reference-ID
    10777537
  • Veröffentlicht am:
    12.05.2024
  • Geändert am:
    12.05.2024
 
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