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pengxp163金蟲(chóng) (小有名氣)
大龍
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[求助]
短文翻譯求助，謝謝！
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| 在EXCEL軟件中，擬合非線性實(shí)驗(yàn)數(shù)據(jù)有四種方法。其中規(guī)劃求解方法與隨機(jī)抽樣方法其最大的優(yōu)點(diǎn)是不要變換方程，且適合任何實(shí)驗(yàn)數(shù)據(jù)非線性擬合。規(guī)劃求解方法最為簡(jiǎn)便，但精度相對(duì)要差，結(jié)果有時(shí)難以把握。后者加入了VBA混合編程，達(dá)到篩選與優(yōu)化目的，提高了擬合精度。另兩種為函數(shù)公式方法和回歸分析方法，前者根據(jù)最小二乘法原理僅僅在電子表格中輸入函數(shù)公式得到精度極高的擬合結(jié)果。后者利用了EXCEL自帶的數(shù)學(xué)分析工具完成擬合，精度最高。但它們?cè)趹?yīng)用之前，需要對(duì)實(shí)驗(yàn)數(shù)據(jù)進(jìn)行多元多項(xiàng)式方程變換，對(duì)難于變換的非線性實(shí)驗(yàn)數(shù)據(jù)不適合。處理工程實(shí)驗(yàn)數(shù)據(jù)，掌握這四種非線性實(shí)驗(yàn)數(shù)據(jù)的擬合方法很有必要。 |
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reko34
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2樓2014-05-01 00:28:47
pengxp163
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3樓2014-05-01 14:07:29
RXMCDM
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【答案】應(yīng)助回帖
★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★
pengxp163: 金幣+50, 翻譯EPI+1, ★★★很有幫助, 版主真的很贊！犧牲假期為蟲(chóng)友助力，十萬(wàn)分感激！ 2014-05-02 15:53:46
pengxp163: 金幣+50, 翻譯EPI+1, ★★★很有幫助, 版主真的很贊！犧牲假期為蟲(chóng)友助力，十萬(wàn)分感激！ 2014-05-02 15:53:46
| The Mcrosoft EXCEL softwares provided four methods with nonlinear experimental data fitting . The advantages of the first importance of programming calculation & random sampling method are no need to transform the equation and suitable for non-linear fitting of any data. The programming calculation method is simple and its accuracy is poor,relatively and sometimes the results are difficult to make sure of . The latter are combined with the VBA mixed programming to achieve the purpose of screening and optimization and improved the fitting precision. The next two methods are excel function formula and regression analysis method . The former can get fitting result of high precision by function formula inputting based on the principle of least squares . The latter is with the highest fitting accuracy by the use of EXCEL mathematical analysis tools . Hower , before the application of both of these methods, multivariate polynomial equation transformation of data is required .It is natural that both of these methods are not suitable for nonlinear experimental data which is difficult to transform and it is necessary to grasp these four non-linear fitting method to process experimental data of projects. |
4樓2014-05-02 11:36:00
RXMCDM
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5樓2014-05-02 12:21:24
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