Research on algorithm of the main ventilator wind pressure characteristic equation
Abstract：To solve the morbidity produced by high order polynomials fitting wind pressure characteristic curve and determine the optimal power of data fitting to characteristic curve of the fan,orthogonal polynomial in least squares method was used to avoid morbid equations,and MSE δ（mean-square error）cannot be served as the criterion of judgment on fitting effect,and when error accords with zero average normal distribution,SD（standard deviation） σ can be the standard of fitting effect.Based on the orthogonal polynomial,least-square principle and SD σ,the algorithm of optimal wind pressure characteristic curve fitting equation were given,and research conclusions about wind pressure characteristic curve are that 5 or 6 order polynomials is not common optimal power of data fitting to characteristic curve of the fan,and the optimal power is different with the fan itself.
Keywords：main ventilatorwind pressure characteristic curveleast square fittingmorbid equationsnormal multinomialmean-square error δstandard deviation σ
Publication Date：2012-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：6( 868-873 )