The multi-point hydraulic control method for advanced controller design of the open canal irrigation systems

• DOI: 10.2166/hydro.2023.086
• Publication Date: 2023-03-14T17:14:53Z
• Authors: Zheli Zhu; Guanghua Guan; Kang Wang
• Keywords: saint-venant equations; model predictive control; precision irrigation; Information technology; integrator delay model; offtakes; T58.5-58.64; Environmental technology. Sanitary engineering; TD1-1066; 6. Clean water

Abstract Most studies about the automatic control of open canal irrigation systems only focus on distant downstream water level, which ignores fact that offtakes may be located anywhere along canal. Such a simplified strategy is likely to result in uncontrollable and inefficient delivery. Therefore, multi-point hydraulic method proposed, Saint-Venant model formulated describe states multiple controlled points. Then, it underlined points with without have different objectives. It suggested implement soft constraints end when there no offtake, meaning moderate level fluctuations are acceptable. By comparing common predictive (MPC) controller, where Integrator Delay hard constraint used for control, proposed MPC controller successfully improved stability before supply reliability by 91 69.5% under conventional condition 54.9 27.1% water-deficient condition. Accordingly, shows great potential precision large districts.