摘要
介绍了移动最小二乘法原理,并运用于拟合水泵装置性能曲线,通过实例与普通最小二乘法进行对比,误差约为普通最小二乘法的1/10,表明移动最小二乘法用于水泵性能曲线拟合精度较高,尤其在轴流泵不稳定的马鞍区,对水泵全特性曲线拟合和过渡过程研究具有重要意义。
This paper introduced the principle of moving least square（MLS） method and its application in fitting pump performance curves.The error of the MLS method was about one-tenth of that of the conventional least square method after a comparison using case studies between two methods.The results showed that moving least square method had high accuracy when it was used in curve-fitting of pump performance,especially in the unstable areas of axial-flow pumps.It has great significance for the research of four-quadrant pump performance curve-fitting and transition simulation.
出处
《南水北调与水利科技》
CAS
CSCD
2011年第2期91-93,共3页
South-to-North Water Transfers and Water Science & Technology
基金
国家"十一五"科技支撑计划重大项目资助(2006BAB04A03)
关键词
移动最小二乘法
水泵性能
曲线拟合
应用
moving least square method
pump performance
curve-fitting
application
