Automatic Control of Fluids in Electropneumatic System

Автори

  • Pavel Dimitrov Department of Automation, TU-Varna
  • Mariela Alexandrova Technical University of Varna, Automation Department, 9010, 1 Studentska Street, Varna, Bulgaria

##semicolon##

https://doi.org/10.29114/ajtuv.vol9.iss2.365

##semicolon##

Electropneumatic systems##common.commaListSeparator## PI control##common.commaListSeparator## Fluid flow regulation##common.commaListSeparator## Leakage detection##common.commaListSeparator## Microcontroller-based automation##common.commaListSeparator## Proportional valve control##common.commaListSeparator## Adaptive control

Абстракт

This paper presents the design, implementation, and evaluation of an automatic flow control system for electropneumatic applications, incorporating a proportional-integral (PI) control algorithm and an integrated leakage detection mechanism. The proposed system employs a microcontroller-based architecture for real-time pressure monitoring and adaptive valve regulation, using a single pressure sensor and a 4–20 mA transmitter interface. A 5/2 directional valve is utilized for flow routing, while proportional throttle control is achieved through a PWM-driven solenoid valve. The control algorithm dynamically adjusts the output in response to pressure deviations, ensuring stable and accurate regulation within a 0–6 bar range. An automated leak detection logic is embedded to identify abnormal air losses by monitoring persistent high output signals and deviation errors beyond a predefined threshold. Experimental results demonstrate that the system achieves rapid stabilization with minimal steady-state error, maintaining pressure within ±2% of the desired setpoint. Furthermore, the leakage detection functionality effectively isolates fault conditions, enhancing operational safety and energy efficiency. The overall performance validates the practicality of the proposed design as a cost-effective and intelligent solution for industrial pneumatic automation.

Изтегляния

Данни за теглене още не са налични.

##submission.citations##

Lin, Z., Wei, Q., Ji, R., Huang, X., Yuan, Y., & Zhao, Z. (2019). An electro-pneumatic force tracking system using fuzzy logic-based volume flow control. Energies, 12(20), 4011. https://doi.org/10.3390/en12204011

Rohilla, P., & Singh, A. P. (2016). To control nonlinear pneumatic system using fuzzy logic controller. International Journal of Engineering Research and Technology (IJERT), 5(4). https://doi.org/10.17577/IJERTV5IS040777

Boyko, V., & Weber, J. (2024). Energy efficiency of pneumatic actuating systems with pres-sure-based air supply cut-off. Actuators, 13(1), 44. https://doi.org/10.3390/act13010044

Yu, Q., Li, F., & Tan, X. (2023). Influence analysis and performance optimization of a pneumatic actuator exhaust utilization system. Strojniški Vestnik – Journal of Mechanical Engineering, 69(3–4), 119–134. https://doi.org/10.5545/sv-jme.2022.266

Energy optimization of pneumatic actuating systems using expansion energy and exhaust re-cycling. (2020). Journal of Cleaner Production, 254, 119983. https://doi.org/10.1016/j.jclepro.2020.119983

Pneumatic control for sustainable compressed air systems: Multi-criteria optimisation for en-ergy-efficient production. (2024). Procedia CIRP, 122, 247–252. https://doi.org/10.1016/j.procir.2024.01.035

Sorli, M., Gastaldi, L., Codina, E., & de las Heras, S. (1999). Dynamic analysis of pneumatic actuators. Simulation Practice and Theory, 7(5), 589–602. https://doi.org/10.1016/S0928-4869(99)00012-9

Ilchmann, A., Sawodny, O., & Trenn, S. (2005). Pneumatic cylinders: Modelling and feed-back force control. Preprint IST 05/0502.

Iliev, G., & Hristov, H. (2023). Modeling and simulation of an electropneumatic positioning system including the length of pneumatic lines. In Environmental. Technology. Resources. Proceedings of the International Scientific and Practical Conference.

Nikitin, A. A., & Levchenko, O. (2024). Position control systems with friction compensation for servo pneumatic actuators. Mechanics and Advanced Technologies, 8(4).

##submission.downloads##

Публикуван

2025-12-30

##submission.howToCite##

Dimitrov, P., & Alexandrova, M. (2025). Automatic Control of Fluids in Electropneumatic System. ГОДИШНИК НА ТЕХНИЧЕСКИ УНИВЕРСИТЕТ - ВАРНА, 9(2), 95–103. https://doi.org/10.29114/ajtuv.vol9.iss2.365

Брой

Раздел (Секция)

ЕЛЕКТРОТЕХНИКА, ЕЛЕКТРОНИКА И АВТОМАТИКА

Подобни статии

<< < 1 2 3 4 > >> 

Можете също да прегледате стартирайте разширено търсене за подобни статии във връзка с тази статия.