为了更好地监视生产过程 ,要求短的采样时间间隔 ,因此序列相关性是实际过程数据普遍具有的特点,探讨适合于序列相关数据的动态主元方法（DPCA）方法是非常必要的。-In order to better monitor the production process, requiring a short sampling interval, the serial correlation is the actual process data generally has the characteristics of sequence data for the dynamic principal component method (DPCA) method is very necessary.