Optimal control algorithm and neural network for dynamic groundwater management |
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| Authors: | Hone‐Jay Chu Liang‐Cheng Chang |
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| Institution: | 1. Department of Bioenvironmental Systems Engineering, National Taiwan University, 1, Sec. 4, Roosevelt Rd., Da‐an District, Taipei City 106, Taiwan;2. Department of Civil Engineering, National Chiao Tung University, 1001 TA Hsueh Road, Hsinchu, Taiwan, 300, ROC |
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| Abstract: | Researchers have found that obtaining optimal solutions for groundwater resource‐planning problems, while simultaneously considering time‐varying pumping rates, is a challenging task. This study integrates an artificial neural network (ANN) and constrained differential dynamic programming (CDDP) as simulation‐optimization model, called ANN‐CDDP. Optimal solutions for a groundwater resource‐planning problem are determined while simultaneously considering time‐varying pumping rates. A trained ANN is used as the transition function to predict ground water table under variable pumping conditions. The results show that the ANN‐CDDP reduces computational time by as much as 94·5% when compared to the time required by the conventional model. The proposed optimization model saves a considerable amount of computational time for solving large‐scale problems. Copyright © 2009 John Wiley & Sons, Ltd. |
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| Keywords: | neural network constrained differential dynamic programming (CDDP) groundwater management |
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