Method for improving prediction accuracy of gasoline properties
A technology for prediction accuracy and gasoline properties, applied in the field of octane number determination by research method, can solve problems such as affecting spectral information, near-infrared spectral baseline drift, absorption peak overlap, etc., to improve prediction accuracy, eliminate baseline drift, The effect of removing noise
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[0023] The present invention will be further described below in conjunction with the accompanying drawings and examples of implementation.
[0024] Taking a certain 95# refined oil as an example, the present invention introduces a method for improving the prediction accuracy of gasoline properties based on WT and FFT. In this case, there are 87 95# refined oil samples in the spectral library, numbered 95#-1~95#-87, and the 10 samples numbered 95#-88~95#-97 are predicted. For the prediction of gasoline RON properties, the modeling spectral band is selected as 4000-4800cm - 1 , a total of 208 wavenumber points in the interval.
[0025] according to figure 1 In the given implementation process, firstly, vector normalization is performed on the near-infrared spectrum data of gasoline samples, and then the functions in the Matlab software toolbox are directly called to perform WT and FFT. Through WT denoising and baseline drift elimination, the WT approximate information coeffi...
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