关于CUSUM控制图的一些应用研究

发布时间：2018-03-17 22:05

本文选题：统计过程控制　切入点：CUSUM控制图　出处：《四川师范大学》2017年硕士论文　论文类型：学位论文

【摘要】：统计过程控制是指通过使用统计方法对研究对象的某个过程进行在线监控,科学地诊断出异常原因,以便针对问题采取有效的措施与方案,进而保证过程的质量.在统计过程控制中,控制图是它的一个重要工具.控制图不仅应用于工业产品质量监控上,还逐渐延伸到军工、生物、医疗、销售等领域.运用CUSUM控制图解决实际问题,本文主要对以下两个方面的内容做了探讨研究:(1)摩托车车灯闪光器生产质量控制,工厂一般对闪光器的闪烁频率检测使用基于3σ原理的Shewhart控制图,以至于不能及时检测生产中微小的异常情况,而降低了产品的合格率,增加了产品的生产成本.由于CUSUM控制图能及时检测闪光器闪烁频率发生的中小漂移,文本采用CUSUM控制图监控闪光器的闪烁频率,能够解决Shewhart控制图存在的问题,提高了控制图的效率,在保证产品质量的同时节约了生产成本.(2)股票交易市场,投资者一般通过股票预测值进行股票买卖.由于预测值与真实值之间存在不可避免的误差,增加了股民的投资风险.本文采用单边CUSUM控制图对股票预测值存在的风险进行在线监控.当控制图发出报警信息时,提醒股民此刻股票投资风险增大,对于爱冒险的投资者可考虑处理手中部分股票,在大风险的前提下从中获利.
[Abstract]:Statistical process control refers to the use of statistical methods to monitor a certain process of the object of study on line, scientifically diagnose the abnormal reasons, in order to take effective measures and solutions to the problem. In statistical process control, the control chart is an important tool. The control chart is not only applied to the quality control of industrial products, but also extends to military industry, biology, medical treatment, In sales and other fields. Using CUSUM control chart to solve practical problems, this paper mainly discusses the following two aspects of research: 1) the production quality control of motorcycle lamp flash device, The Shewhart control chart based on 3 蟽 principle is generally used in the flicker frequency detection of the flash device in factories, so that the tiny abnormal situation in production can not be detected in time, and the qualified rate of the product is reduced. Because the CUSUM control chart can detect the small drift of flash frequency in time, the CUSUM control chart can be used to monitor the flicker frequency of flash device, which can solve the problem of Shewhart control chart. The efficiency of the control chart is improved, and the production cost is saved at the same time as the quality of the product is guaranteed. Investors usually buy and sell stocks through the stock forecast value. Because of the inevitable error between the forecast value and the real value, This paper uses one-sided CUSUM control chart to monitor the risk of stock forecast value online. When the control chart sends out alarm message, it reminds stock investors that the risk of stock investment is increasing at the moment. For adventurous investors, consider dealing with some of the shares and profiting from them at great risk.
【学位授予单位】：四川师范大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：O213.1

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