Model Research of Electric Coal Calorific Value Based on Near Infrared Frequency Domain Self-Adaption Analysis Method

IMR OpenIR

	Model Research of Electric Coal Calorific Value Based on Near Infrared Frequency Domain Self-Adaption Analysis Method
其他题名	Model Research of Electric Coal Calorific Value Based on NearInfrared Frequency Domain Self-Adaption Analysis Method
	Li Zhi 1; Wang Shenghao 1; Zhao Yong 1; Wang Xiangfeng 2; Li Yaozheng 3
	2014
发表期刊	SPECTROSCOPY AND SPECTRAL ANALYSIS
ISSN	1000-0593
卷号	34 期号:10 页码:2792-2798
摘要	At present, because the blending coal was taken in some power stations as the major fuel which has too complex physical and chemical characters to build accurate normal near infrared quantitative models in some cases, which brought difficulties for on-line electric coal calorific value detection. For this reason, it was carefully studied that the time domain and frequency domain properties of the power generation coal near infrared spectra, and was proposed that a new quantitative near infrared method named frequency domain self-adaption analysis. The first step, time domain near infrared spectra are converted into frequency domain near infrared signal by Fast Fourier Transform; The second step, the suitable frequency information range by means of valid spectra energy parameter eta(E) was obtained by this method; The third step, it was constructed that an information volume parameter which is formed by correlation coefficient, standard deviation spectra and coordinate of harmonic in frequency domain to initialize the regression model input parameters' position; Finally, the optimal model is established by way of discrete frequency domain scooping and synthesized performance function. At the same time, compared with the principle component regression, partial least squares regression, back propagation artificial network, support vector regression and partial least squares regression optimized by genetic algorithm models, it is acquired that a more accurate method which can effectively avoid over fitting and virtual effective models and has a very useful application prospect by verifying the electric coal calorific value. Additionally, this method can be used in other quantitative spectra analysis.
其他摘要	At present, because the blending coal was taken in some power stations as the major fuel which has too complex physical and chemical characters to build accurate normal near infrared quantitative models in some cases, which brought difficulties for on-line electric coal calorific value detection. For this reason, it was carefully studied that the time domain and frequency domain properties of the power generation coal near infrared spectra, and was proposed that a new quantitative near infrared method named frequency domain self-adaption analysis. The first step, time domain near infrared spectra are converted into frequency domain near infrared signal by Fast Fourier Transform; The second step, the suitable frequency information range by means of valid spectra energy parameter η_E was obtained by this method; The third step, it was constructed that an information volume parameter which is formed by correlation coefficient, standard deviation spectra and coordinate of harmonic in frequency domain to initialize the regression model input parameters' position; Finally, the optimal model is established by way of discrete frequency domain scooping and synthesized performance function. At the same time, compared with the principle component regression, partial least squares regression, back propagation artificial network, support vector regression and partial least squares regression optimized by genetic algorithm models, it is acquired that a more accurate method which can effectively avoid over fitting and virtual effective models and has a very useful application prospect by verifying the electric coal calorific value. Additionally, this method can be used in other quantitative spectra analysis.
关键词	SPECTROSCOPY Near infrared spectra Fast Fourier transform Frequency domain self-adaption analysis method Calorific value of electric coal Quantitative analysis model
收录类别	CSCD
语种	英语
资助项目	[National Natural Science Foundation of China]
CSCD记录号	CSCD:5239663
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/157782
专题	中国科学院金属研究所
作者单位	1.东北大学 2.中国科学院金属研究所 3.武汉大学
推荐引用方式 GB/T 7714	Li Zhi,Wang Shenghao,Zhao Yong,et al. Model Research of Electric Coal Calorific Value Based on Near Infrared Frequency Domain Self-Adaption Analysis Method[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS,2014,34(10):2792-2798.
APA	Li Zhi,Wang Shenghao,Zhao Yong,Wang Xiangfeng,&Li Yaozheng.(2014).Model Research of Electric Coal Calorific Value Based on Near Infrared Frequency Domain Self-Adaption Analysis Method.SPECTROSCOPY AND SPECTRAL ANALYSIS,34(10),2792-2798.
MLA	Li Zhi,et al."Model Research of Electric Coal Calorific Value Based on Near Infrared Frequency Domain Self-Adaption Analysis Method".SPECTROSCOPY AND SPECTRAL ANALYSIS 34.10(2014):2792-2798.