Control of an Irrigation Canal
Publication: Journal of Hydraulic Engineering
Volume 122, Issue 7
Abstract
A control algorithm to maintain a constant water depth at every pool of a multireach irrigation canal is presented. A simplified model of the dynamic response of the downstream water depth is obtained as a three-parameter exponential. This model, which predicts the future error signal, incorporates actual canal information and is used in the calculation of control adjustments. The effectiveness of the control algorithm is demonstrated by three examples of computer model simulation of a real irrigation canal, with variable reach characteristics. Perturbations of an equilibrium are considered, which simulate the opening or closing of an offtake. Using information about the actual water levels and gate openings in the canal, the controller restores the set-point downstream water depth. Results show the controller to be accurate, fast, and stable, despite the variable characteristics of the canal reaches involved.
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References
1.
Aström, J. J., and Wittenmark, B. (1990). Computer-controlled systems . Prentice-Hall, Inc., Englewood Cliffs, N.J.
2.
Balogun, O. S., Hubbard, M., and DeVries, J. J.(1986). “Automatic control of canal flow using linear quadratic regulator theory.”J. Hydr. Engrg., ASCE, 114(1), 75–102.
3.
Clemmens, A. J., and Replogle, J. A.(1989). “Control of irrigation canal networks.”J. Irrig. and Drain. Engrg., ASCE, 115(1), 96–110.
4.
Cunge, J. A., Holly, F. M., and Verwey, A. (1980). Practical aspects of computational hydraulics . Pitman, London, England.
5.
Filipovic, V., and Milosevic, Z. (1988). “DYN 2 method for optimal control of water flow in open channels.”J. Hydr. Engrg., ASCE, 115(6), 973–981.
6.
Ligget, J. A., and Cunge, J. A. (1975). “Numerical solutions of the unsteady flow equations.”Unsteady flow in open channels, K. Mahmood and V. Yevjevich, eds., Water Resources Publications, Fort Collins, Colo., Vol. 1, 89–182.
7.
Skertchly, L. (1991). “Automatización del Canal Alto.”Rep. AM 9105, Inst. Mex. de Tec. del Agua, Cuernavaca, Mor., Mexico (in Spanish).
8.
Skertchly, L., and Miles, J. P. (1994). “CAD method for analysis and controller design of irrigation canals.”Water resources and distribution (hydraulic engineering software V Vol. 1), W. R. Blain, and K. L. Katsifarakis, Computational Mechanics Publ., Boston, Mass., 89–96.
9.
Smith, O. J. M. (1957). “Closer control of loops with deadtime.”Chem. Engrg. Progress, Vol. 53, 217–219.
10.
Zimbelman, D. D., and Bedworth, D. D.(1983). “Computer control for irrigation canal systems.”J. Irrig. and Drain. Engrg., ASCE, 109(1), 43–59.
Information & Authors
Information
Published In
Journal of Hydraulic Engineering
Volume 122 • Issue 7 • July 1996
Pages: 403 - 410
Copyright
Copyright © 1996 American Society of Civil Engineers.
History
Published online: Jul 1, 1996
Published in print: Jul 1996
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