稀土分离企业的统计过程控制研究  

The Statistical Process Control in Tombarthite Separation Enterprises

作　　者：卢虎生[1,2] 王雪杰 LU Hu-sheng;WANG Xue-jie(Key Laboratory of Integrated Exploitation of BayanObo Multi-Metal Resources,Inner Mongolia University of Science and Technology,Baotou 014010,China;School of Economics and Management,Inner Mongolia University of Science and Technology,Baotou 014010,China)

机构地区：[1]内蒙古科技大学白云鄂博矿多金属资源综合利用重点实验室,内蒙古包头014010 [2]内蒙古科技大学经济与管理学院,内蒙古包头014010

出　　处：《稀土》2020年第5期150-158,共9页Chinese Rare Earths

基　　金：国家自然科学基金项目(71162027);内蒙古自然科学基金项目(2014MS0710);内蒙古哲学社会科学规划项目(2014B030)。

摘　　要：稀土分离企业生产出的联产品,其纯度相互关联,不具有独立性。为了对稀土联产品的质量进行监控,本文首先以服从向量自回归VAR(5)过程的稀土联产品的纯度为研究对象,将多元累计和控制图(MCUSUM)用于对均值偏移过程的监控,并与残差T^2控制图进行比较,结果证明了MCUSUM控制图对较小偏移的检出能力明显高于T^2控制图。最后指出稀土分离企业应当将在线监控系统与控制图相结合,提高企业统计过程控制能力。The purity of co-product produced by rare earth separation enterprises is related to each other.In order to monitor the quality of rare earth co-products,the purity of rare earth co-product obeying the vector autoregressive VAR(5)process was studied first.Then the multivariate cumulative sum(MCUSUM)control Chart was applied to monitor themean shift process.Compared with the residual T2 control chart,the MCUSUM control chart proves to have significantly higher detection ability for smaller offsets.Finally,it concludes that rare earth separation enterprises shouldcombine online monitoring systems with control charts to improve thecontrol capabilities in statistical process.

关 键 词：多元累计和控制图 T^2控制图 联产品 纯度 

分 类 号：F204[经济管理—国民经济]