仪器和软件
实验设计
校正集批次实验设计
实验批次 | API理论含量(%) | API批次 | 辅料1/辅料2 | 物料粉末粒径 |
1 | 90 | 190437 | 10:10 | 未过筛 |
2 | 100 | 190438 | 11:10 | 未过筛 |
3 | 100 | 190438 | 10:10 | 过80目筛 |
4 | 110 | 190439 | 10:10 | 过80 目筛 |
5 | 80 | 190439 | 11:10 | 过100目筛 |
6 | 80 | 190437 | 9:10 | 未过筛 |
7 | 90 | 190438 | 9:10 | 过100目筛 |
混合过程
光谱采集
模型的建立与评价
主成分分析
流化床混合样品PCA得分图
光谱预处理
不同预处理方法建模参数结果
序号 | 预处理 | RMSEC | RMSECV | R2c | R2cv | R2p | RMSEP | LVs |
1 | Raw | 2.2818 | 2.6997 | 0.999 | 0.999 | 0.963 | 2.1505 | 5 |
2 | meancenter | 2.06 | 2.4013 | 0.966 | 0.955 | 0.974 | 1.7872 | 4 |
3 | SNV+meancenter | 1.8904 | 2.2385 | 0.971 | 0.961 | 0.977 | 1.6820 | 3 |
4 | SNV+FD+SG3+meancenter | 1.9935 | 2.5769 | 0.968 | 0.948 | 0.96 | 2.2361 | 3 |
5 | SNV+FD+SG5+meancenter | 2.0804 | 2.482 | 0.965 | 0.951 | 0.973 | 1.8323 | 3 |
6 | SNV+SD+SG3+meancenter | 1.5014 | 2.7914 | 0.982 | 0.943 | 0.969 | 1.9649 | 3 |
7 | SNV+SD+SG5+meancenter | 1.4554 | 3.0357 | 0.983 | 0.929 | 0.965 | 2.1046 | 5 |
8 | FD+SG3+meancenter | 1.4062 | 2.3337 | 0.984 | 0.958 | 0.977 | 1.6801 | 5 |
9 | FD+SG3+SNV+meancenter | 2.0054 | 2.518 | 0.968 | 0.95 | 0.971 | 1.8893 | 3 |
10 | FD+SG5+meancenter | 1.6643 | 2.0198 | 0.978 | 0.969 | 0.976 | 1.7176 | 4 |
11 | FD+SG5+SNV+meancenter | 2.0773 | 2.4021 | 0.965 | 0.955 | 0.973 | 1.8349 | 3 |
12 | SD+SG3+meancenter | 1.5572 | 2.8779 | 0.981 | 0.935 | 0.964 | 2.125 | 3 |
13 | SD+SG3+SNV+meancenter | 1.5092 | 2.8393 | 0.982 | 0.936 | 0.965 | 2.0787 | 3 |
14 | SD+SG5+meancenter | 1.4253 | 2.9659 | 0.984 | 0.931 | 0.969 | 1.9811 | 5 |
15 | SD+SG5+SNV+meancenter | 1.4883 | 3.0722 | 0.982 | 0.927 | 0.965 | 2.0912 | 5 |
不同预处理后的建模结果比较
SNV预处理后的平均光谱图
(a) |
(b) |
(a)最佳预处理后PLS模型的第一主成分荷载图;(b)纯API和主要辅料的光谱图比较 |
PLS模型的评价及验证
(a) | (b) |
图2-13 (a)经最佳预处理和波段选择优化后的PLS模型图;(b) API含量模型验证图 |
(a) | (b) |
(a)校正集和验证集样品PCA得分图;(b)诊断图(图中蓝色虚线表示95%的置信区间) |