王美丽 张双双 丛乐

摘要：本文利用“城市市政管网泄漏检测综合实验台”作为给水管网的系统模型，以漏失为系统的待辨识参数，建立了激励响应的系统辨识模型。就是以漏失为系统的输入输出时间函数来确定描述系统行为的数学模型。通过辨识建立数学模型的目的是估计表征系统行为的重要参数，建立一个能模仿真实系统行为的模型。实验中使用水力瞬变发生器在管道末端产生激励，得出监测节点的压力响应曲线。实验研究分别进行了管网的无漏失实验模型和有漏失实验模型的实验，给出了管道在不同的压力、漏失位置及漏失量下的响应特性，分析了管道的压力响应在不同管道运行状态时随瞬变激励变化的规律。

关键词 ： 给水管网；水力瞬变流理论；系统辨识

Abstract: by using the "city municipal pipeline leak detection of the comprehensive experimental stage" water distribution network as a model of the system, the system used to for the parameters to be identified, establish the incentive response identification system model. With the system is used for input and output time function to determine describe the behavior of the system mathematical model. Through the establishment of mathematical model identification purpose is to estimate the important parameters of system behavior characterization, establish a can imitate the behavior of the genuine system model. Experiments using hydraulic transient generator in the pipe end produce incentive, monitoring the pressure that node response curve. The experiment research, the network without loss of experimental model and a loss of the experiment model experiment, given the pipeline in different pressure, loss of 14 position and the response characteristics, analyzed the pipeline pressure response in different pipeline operation condition with transient incentive and change rules.

Keywords: water supply pipe network; Hydraulic transient flow theory; System identification

中图分类号：TU821.3文献标识码：A文章编号：

管网漏失是供水行业普通存在的严重现象。漏失在浪费了宝贵的水资源的同时，还给供水企业造成了巨大的经济损失，对我们来说是灾难性的毁坏。因而世界各国都把管网漏失作为重要课题来研究，它已经成为给水事业的一个重要组成部分。给水管网漏失问题亟待解决，而漏失的定点及定量是管网漏失控制研究的重要环节。本论文在现有试验台的基础上建立了激励响应的系统辨识模型，得出了管道在不同的压力、漏失位置及漏失量下的响应特性，分析了管道的压力响应在不同管道运行状态时随瞬变激励变化的规律。……