|
|||||
|
|
| 白砂糖色值近红外光谱分析的波段选择 | |
| 引用本文： | 梁家杰,潘涛,陈星旦,胡愉华,熊德先,林喜今,谢军.白砂糖色值近红外光谱分析的波段选择[J].红外技术,2009,31(2). |
| 作者姓名： | 梁家杰 潘涛 陈星旦 胡愉华 熊德先 林喜今 谢军 |
| 作者单位： | 1. "重大工程灾害与控制"教育部重点实验室,暨南大学,广东,广州,5106322;暨南人学光电上程系,广东,广州,510632 2. 暨南人学光电上程系,广东,广州,510632;中国科学院长春光学精密机械与物理研究所应用光学国家重点实验室,吉林,长春,130033 3. 暨南人学光电上程系,广东,广州,510632 4. 暨南人学信息科学技术学院,广东,广州,510632 |
| 基金项目： | 国家自然科学基金，广东省科技计划粤港关键领域重点突破项目，广东省科技计划，广州市科技攻关项目，教育部留学归国人员科技启动基金 |
| 摘 要： | 采用近红外漫反射光谱技术和偏最小二乘法(PLS)建立白砂糖色值的定量分析模型.用多元散射校正方法对光谱进行预处理,再用Savitzky-Golay平滑化方法对原谱、一阶导数谱和二阶导数谱进行处理.选取5个波段,每个波段分别采用原光谱、一阶导数谱、二阶导数谱.同时调整Savitzky-Golay平滑点数和PLS因子数,通过多次PLS数值实验比较,按照预测效果确定每个模型的最优平滑点数、因子数,再从中选优.结果表明,采用780～1100nm-阶导数谱的定标效果最好,模型的预测均方根偏差、相对预测均方根偏差分别为11.2,8.91%.780～1100nm可以代替近红外全谱波段(780～2500nm)得到好的定量分析效果,为设计小型专用近红外分析仪器提供依据. |
| 关 键 词： | 近红外光谱分析 偏最小二乘法 波段优选 白砂糖 色值 |
Choice of Wave Band in Near Infrared Spectroscopy Analysis of Color Value of White Granulated Sugar |
|
| LIANG Jia-jie,PAN Tao,CHEN Xing-dan,HU Yu-hua,XIONG De-xian,LIN Xi-ling,XIE Jun.Choice of Wave Band in Near Infrared Spectroscopy Analysis of Color Value of White Granulated Sugar[J].Infrared Technology,2009,31(2). | |
| Authors: | LIANG Jia-jie PAN Tao CHEN Xing-dan HU Yu-hua XIONG De-xian LIN Xi-ling XIE Jun |
| Affiliation: | LIANG Jia-jie1,2,PAN Tao1,CHEN Xing-dan2,3,HU Yu-hua2,XIONG De-xian4,LIN Xi-ling4,XIE Jun4,Guangzhou Guangdong 510632,China,2.Department of Optoelectronic Engineering,Jinan University,3.National Key Laboratory of Applied Optics,Changchun Institute of Optics,Fine Mechanics , Physics,Chinese Academy of Sciences,Changchun Jilin 130033,Ch... |
| Abstract: | The calibration models for color value of white granulated sugar are constructed by near infrared diffuse reflection spectroscopy technology and partial least squares(PLS) regression.The spectra is pretreated by multiplicative scatter correction method,and makes use of Savitzky-Golay smoothing method to do smooth processing to the original spectra,the first derivative spectra and the second derivative spectra.5 wave bands are selected,and adopting the original spectra,the first derivative spectra and the se... |
| Keywords: | near infrared spectroscopy analysis partial least squares regression optimal wave band white granulated sugar color value |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |