通风机性能曲线的拟合算法  

The Fitting Algorithm of Fan Characteristic Curve

作　　者：钟山[1] 卢雪燕[1] 

机构地区：[1]梧州学院计算机与电子信息工程系,广西梧州543002

出　　处：《工程图学学报》2009年第4期140-145,共6页Journal of Engineering Graphics

基　　金：广西自然科学基金资助项目(桂科青0832096);广西教育厅科研资助项目(200708LX151);梧州学院基金资助项目(2008B008)

摘　　要：对通风机的离散试验数据,采用最小二乘法或三次样条插值法很难达到最佳的拟合曲线。为此提出采用一种新的延拓逼近法,实现通风机高精度性能曲线的拟合。实例的拟合结果表明:与最小二乘法和三次样条插值法相比,延拓逼近法在相同的插值次数条件下,由于利用分段插值区域周围结点的信息,可以实现全域的最佳拟合,具有更高的拟合精度。Usually, the high precision fan characteristic curve is formed by fitting scattered experimental data using Least Square Method or Cubic Spline Interpolation Method, but both approaches are really hard to get the best fitting effect. A new extended interpolation method to realize the high precision firing of fan characteristic curve is presented. The fitting result of a practical example shows that this method can implement higher precision fitting compared to those mentioned above under same conditions. Owing to using the experimental data around the subsection interpolation area, it can realize the best fitting in the whole interpolation area.

关 键 词：计算机应用 曲线拟合 延拓逼近算法 通风机性能曲线 

分 类 号：TP391.7[自动化与计算机技术—计算机应用技术]