Liang Liang, Jianhua Zhang, Zhiqiang Hu. Quantitative Analysis of Concentration of Dense Phase Pulverized Coal Using Terahertz Time-Domain Spectroscopy[J]. Laser & Optoelectronics Progress, 2020, 57(15): 153003
- Laser & Optoelectronics Progress
- Vol. 57, Issue 15, 153003 (2020)
Fig. 1. Optical path of THz time-domain spectral system
Fig. 2. Terahertz absorption coefficients of coal samples at different concentrations
Fig. 3. Variable selection results of GA-PLS-R. (a) Number of variables as a function of RMSEC; (b) statistical frequency of selected variables
Fig. 4. Results of sample prediction set obtained by three methods. (a) GA-PLS-R; (b) biPLS-R; (c) iPLS-R
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Table 1. Measurement data of sample sheets
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Table 2. Variable selection results of iPLS and biPLS
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Table 3. Comparison of regression modeling results
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