摘要
南水北调中线工程沿线各节制闸、分水口等处均设置了流量计。精确的流量数据,不仅是水量计量的基础,也是全线输水调度的依据,流量计的率定是至关重要的工作。而传统流量计率定方法需事先人工选定回归函数,来拟合流量计与流速仪所测的流量关系,这种方法对线型的选择存在随意性,需反复多次计算比较才能找到较为满意的回归函数。应用信息扩散技术对流量关系进行回归,该技术能够根据实测数据自动生成回归模型,避免事先假定函数,信息扩散技术还可获得更多样本位置信息,提高拟合效果。南水北调中线京石段的实例应用表明,该模型适应性强,拟合精度较高,使用灵活,有较好的推广应用价值。
Many flowmeters are set up in South-to-North Water Diversion Project,and the accuracy of flow rate is very important to water delivery.Traditional method to calibration need choose confirmed function in advance,and expense a lot of time.A new model of information diffusion is established to regress the flux relation between flowmeter and velocimeter.The model that is more intelligent and flexible can find the optimal structure automatically by information diffusion.Take the new method into calibration of flowmeter in south-to-north water diversion middle route project,and compare information diffusion model with traditional methods.Results show that the new model has high accuracy and is effective.The paper provides a new approach to calibrate flowmeter.
作者
郭芳
马艳军
陈晓楠
段春青
GUO Fang;MA Yan-jun;CHEN Xiao-nan;DUAN Chun-qing(Adiminstration of South-to-North Water Diversion Middle Route Project,Beijing 100038,China;Beijing Water Affairs Centre for Suburbs,Beijing 100073,China)
出处
《南水北调与水利科技》
CSCD
北大核心
2015年第S01期160-162,共3页
South-to-North Water Transfers and Water Science & Technology
关键词
流量计率定
信息扩散
南水北调
calibration of flowmeter
information diffusion
the South-to-North Water Diversion Project
作者简介
郭芳(1983-),女,河南漯河人,工程师,主要从事水资源系统研究和调度运行管理工作。E-mail:82633379@qq.com。
