To improve the monitoring sensitivity, it is for the first time to propose the utilization of the PDF of the principal components in real-time to monitor batch production process.

• 针对这一缺点，本文首次提出用KDE提取主元的概率密度函数用作为实时状态监测图，应用于对间歇生产过程主元空间实时状态监测的问题上。