文章基本信息

标题：A Matlab code to fit periodic data
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作者：Ruth da Silva Brum ; Jairo Valões de Alencar Ramalho ; Luiz Alberto Oliveira Rocha 等
期刊名称：Revista Brasileira de Computação Aplicada
电子版ISSN：2176-6649
出版年度：2015
卷号：7
期号：2
页码：16-25
DOI：10.5335/rbca.2015.4618
语种：English
出版社：Universidade de Passo Fundo (UPF)
摘要：This paper presents a computer method to find the best sine-based function, in the sense of least squares, to fit periodic data. Even though the least squares method is not a novelty, there is a void in the literature about its use to find trigonometric functions, particularly when it gives rise to nonlinear systems, as it is done in this article. The respective code, implemented in the Matlab programming language, is detailed and analyzed exploring experimental data from the air and soil temperatures measured along the year in earth air heat exchangers (EAHE) built in the facilities of a case study house in the Brazilian state of Rio Grande do Sul. The fitting curves have been employed by the authors in different works to define boundary conditions to study new computer models of EAHE.
关键词：Ajuste de Funções Trigonométricas;Mínimos Quadrados;Trocadores de Calor Solo-Ar