Computerization of the Synthesized Control Chart

• Main Authors: Weng I Hsiang, 翁逸翔
• Other Authors: Yang Ling
• Format: Others
• Language: zh-TW
• Published: 2009
• Online Access: http://ndltd.ncl.edu.tw/handle/54380273270147538660

碩士 === 聖約翰科技大學 === 工業工程與管理系碩士班 === 97 === When a process is outliers-existing, using the mean control chart for monitoring the process is too sensitive and always leads to high false-alarms. The median control chart is outliers-resistant and will be a steady control framework. However, while monitoring the small shift of the process, the mean control chart outperforms the median control chart. Recently, there are several good synthesized control charts have been proposed for the outliers-existing process. The purpose of this study is to develop easy-to-use and Chinese interface applications software for the synthesized control charts, such as the Shewhart-based synthesized control scheme and the exponentially weighted moving average-based synthesized control scheme. The Visual Basic is used. Under different process mea n shifts and different degree of the contaminated data, the performance of the synthesized control chart is evaluated via simulation under some certain quality cost parameters setting. Applying the developed software could reduce the human errors and save the computing time.