Control design for an irrigation channel from physical data

In this paper, a tool for design of decentralized controllers for irrigation channels is developed. A physical model of the channel is obtained using the St. Venant equations, and a data set is generated by simulating this model. A first order nonlinear model useful for control design is then estimated from the simulated data using system identification techniques, and a controller is designed based on the estimated model and given design specifications. The decentralized controllers are PI controllers augmented with first order low pass filters. The designed controllers showed good performance in field experiments; the water levels recovered quickly from disturbances with small deviations from setpoints.

[1]  Erik Weyer,et al.  A reference model approach to performance monitoring of control loops with applications to irrigation channels , 2005 .

[2]  Romeo Ortega,et al.  Adaptive head control of a hydraulic open channel model , 1989, Autom..

[3]  Xavier Litrico,et al.  Experimental validation of a methodology to control irrigation canals based on Saint-Venant equations ☆ , 2005 .

[4]  S. Dijkstra,et al.  Simple Water Level Controller for Irrigation and Drainage Canals , 1999 .

[5]  Jonathan de Halleux,et al.  Boundary feedback control in networks of open channels , 2003, Autom..

[6]  Erik Weyer,et al.  Control design for an irrigation channel from physical data , 2003 .

[7]  Lennart Ljung,et al.  System Identification: Theory for the User , 1987 .

[8]  Erik Weyer,et al.  System identification of an open water channel , 2000 .

[9]  Erik Weyer,et al.  DETECTION OF SLUGGISH CONTROL LOOPS IN IRRIGATION CHANNELS , 2005 .

[10]  Erik Weyer,et al.  On physical and data driven modelling of irrigation channels , 2003 .

[11]  Didier Georges,et al.  Nonlinear Control of Open-Channel Water Flow Based on Collocation Control Model , 2004 .

[12]  José Rodellar,et al.  Predictive control method for decentralized operation of irrigation canals , 2002 .

[13]  Other.  Water for people, water for life - the United Nations World Water Development Report , 2003 .

[14]  Erik Weyer,et al.  DECENTRALISED PI CONTROL OF AN OPEN WATER CHANNEL , 2002 .

[15]  P. Malaterre.  PILOTE: Linear Quadratic Optimal Controller for Irrigation Canals , 1998 .

[16]  Iven M. Y. Mareels,et al.  Systems engineering for irrigation systems: Successes and challenges , 2005, Annu. Rev. Control..

[17]  Katsuhiko Ogata,et al.  Modern Control Engineering , 1970 .

[18]  Subhash C. Jain,et al.  Open-Channel Flow , 2000 .

[19]  Weng Khuen Ho,et al.  Relay auto-tuning of PID controllers using iterative feedback tuning , 2003, Autom..

[20]  Erik Weyer,et al.  Closed loop identification of an irrigation channel , 2001, Proceedings of the 40th IEEE Conference on Decision and Control (Cat. No.01CH37228).