下游常水位水力自动控制渠道运行动态过程及数学模型的研究  

Mathematical model of dynamic process of hydraulic automatically operated canals with Constant ,|downstream level controller

作　　者：王长德[1] 张礼卫[2] 

机构地区：[1]武汉水利电力大学 [2]深圳市水务局

出　　处：《水利学报》1997年第11期11-19,70,共10页Journal of Hydraulic Engineering

摘　　要：本文通过分析灌溉渠道中ＡＶＩＯ和ＡＶＩＳ下游常水位闸门的工作原理和运行过程，动用自动控制理论求出这两类闸门门后水位偏差和过闸流量之间的传递函数，并将之作离散化处理，再结合渠道的明渠非恒定流方程联合求解，最后可得出设置ＡＶＩＯ、ＡＶＩＳ下游常水位闸门渠道的运行动态过程．数学模型由计算机求解，可为水力自动控制系统的渠道和闸门设计提供依据，并可预测系统的运行过程与稳定性．n the basis of retrieving the existing control methods and algorithm of automatic irrigation systems,a mathematical model for simulation of dynamic operation process of hydraulically automated irrigation canals installed with AVIO and AVIS gates is presented the main point of this mathematical model is firstly applying a set of unsteady flow equations(St.Venant equations here)and treating the condition of gate movement as its dynamic boundary,and then decoupling this interaction of gate movement with the change of canal flow.In this process,it is necessary to give the gates ,` open ,|loop transfer function whose input is water level deviation and output is gate discharge.The result of this simulation for a practical reach has shown it ,`s satisfactory accuracy.

关 键 词：自动控制 渠道 运行动态过程 灌溉 数学模型 

分 类 号：S274.2[农业科学—农业水土工程]