Design and evaluation of control systems for a real canal

Abstract

The distant downstream proportional integral (PI) feedback control was applied to the W-M lateral canal of the Maricopa Stanfield Irrigation and Drainage District located in central Arizona, U.S.A. Proper configuration of those controls for the canal can be challenging. Towards this end, an integrated approach to the design of an automatic control system for the canal was proposed. This approach presented herein is not only a systematical review of previous work, but also represents a further advance of the previous simulation study by Tsinghua University (Shang et al, 2011) on relating the canal control algorithm to local PI controls for the real canal. To evaluate the control system potential, performance of the control algorithm that was obtained through implanting predicative module into linear quadratic regulator (LQR) was analyzed with singular value bode. Additional "manufactured" tests were conducted to compare with the control system that is currently in use. The results indicated that the developed control system rather than the system in current use had considerable potential to closely match discharge at the downstream check structures with those ordered by water users while maintaining the water level throughout the length of the canal. canal control system, singular value bode, proportional integral (PI) control, linear quadratic regulator (LQR)Citation:

Algorithm for Canal Gate Operation to Maintain Steady Water Levels Under Abrupt Water Withdrawal

“…The medium‐term goal of studies in this field is the automatic operation of such systems to improve water distribution efficiency and safety. As part of efforts toward achieving this objective, feedback control and online monitoring are being considered for implementation in several irrigation projects (Merkeley and Walker, ; Schuurmans et al , ; Guan et al , ; Shang et al , ). Over the last 30 years, the concepts of real‐time control have been used to develop feedback control algorithms for canal systems (Guan et al , ).…”