Principal component analysis (PCA) and partial least squares (PLS) are the conventional techniques of multivariate statistical process control but exist some defects.

在多变量统计过程控制中，传统的方法主要包括主元分析和偏最小二乘，这些方法存在着诸多缺陷。

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Move the scientific discovery process forward by applying the latest statistical techniques.

移动科学发现进程采用最新的统计技术。

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In this paper, firstly, an introduction to quality engineering techniques is given, then current situation and general trend in research on statistical process control techniques presented.

本文首先介绍了质量工程技术的主要内容。在此基础上，概述了统计过程控制技术的研究现状及其发展趋势。

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