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Minimized control of overflow based on urban hydraulic system

In this paper, the problem of the minimized control of overflow of combined sewage is discussed based on urban hydraulic system. The sewerpsilas discrete state-space model of the hydraulics and predictive model is established to predict the future output at sampling time based on Saint-venant equations. Firstly the model is corrected by the errors between value of observation and prediction. Secondly a quadratic function by comparing the predicted output with the reference trajectory is introduced to calculate the best flow rate. Then, the minimal overflow of combined sewage is obtained in urban hydraulic system. Finally, a numerical example is given to illustrate the effectiveness of the proposed approach by a hydraulic system of a community in Hangzhou.