Minimize overflow of combined sewage in urban hydraulic system

摘要

The problem of the overflow of combined sewage is concerned with in this paper.The sewer’s discrete state-space model of the hydraulics and predictive model are established to predict the future output at sampling time.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.Finally,the minimal overflow of combined sewage is obtained in urban hydraulic system.