Robust Linear PID Control of a Pressure Reducing Valve
Publication: Journal of Hydraulic Engineering
Volume 149, Issue 2
Abstract
This work presents the design of controls for a pressure-reducing valve considering stability and robustness issues and preserving the classical linear proportional-integral-derivative (PID) structure included in, nowadays, industrial controllers. Due to only the outlet pressure being measured for control purposes, other variables, flow and inlet pressure, are included in the uncertainty of the system. The theory of Lyapunov allows for validating the linear PID proposal even considering the nonlinear relation between inlet pressure and flow with the behavior of pressure-reducing valves. A brief robustness analysis demonstrates how the proposal can cope with the uncertainties of the system. Finally, experimental and simulated results indicate the good performance of the control.
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Data Availability Statement
All data, models, and code generated or used during the study appear in the published article.
Acknowledgments
This work was supported by the National University of Patagonia San Juan Bosco under project N°1632, Energy recovery and pressure control in water distribution systems, and Sociedad Cooperativa Popular Limitada de Comodoro Rivadavia.
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Published In
Journal of Hydraulic Engineering
Volume 149 • Issue 2 • February 2023
Copyright
© 2022 American Society of Civil Engineers.
History
Received: Feb 3, 2022
Accepted: Oct 8, 2022
Published online: Nov 28, 2022
Published in print: Feb 1, 2023
Discussion open until: Apr 28, 2023
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