基于近紅外光譜結(jié)合主成分分析和BP神經(jīng)網(wǎng)絡(luò)的常用塑料快速鑒別
[Abstract]:In order to realize the classification and recovery of plastics, it is necessary to identify the plastics quickly and accurately. Acrylonitrile-butadiene-styrene (ABS),) polypropylene (PP),) polyethylene (PE), polyethylene terephthalate (PET), polystyrene (PS), polyvinyl chloride (PVC),) were collected. Seven kinds of plastics, such as polycarbonate (PC), were measured by near infrared spectroscopy (NIR). Principal component analysis (PCA) and backpropagation (BP) neural network were used to establish models for identification. Firstly, the characteristic information of the spectrum is extracted by principal component analysis. The cumulative contribution rate of the first eight principal components is 94.367, which contains the main information of the original spectrum. The eight principal components are used as the input of the BP neural network. Seven kinds of plastics were used as the output, and a three-layer BP neural network model was established. A total of 210 samples of each plastic were used to train the neural network model and 70 were used to predict each kind of plastics. The accuracy of prediction was 98.571. it can effectively identify common plastics.
【作者單位】: 中國(guó)計(jì)量大學(xué)光學(xué)與電子科技學(xué)院;杭州彩譜科技有限公司;
【分類號(hào)】:TQ320.77;TP183
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