Combined Control Scheme for Monitoring Quality Characteristics
Journal Title: Analele Universitatii "Eftimie Murgu" Resita. Fascicula de Inginerie - Year 2014, Vol 21, Issue 1
Abstract
In the literature, the Exponentially Weighted Moving Average (EWMA) and Exponentially Weighted Moving Variance (EMWV) control schemes have been used separately to monitor the process average and process variability respectively. Here the two are combined and applied on simulated process with different level of variation. The control limit interval (CLI) and the average run length (ARL) were evaluated for the combined chart. The combined chart performed better than the two independently. Furthermore, an algorithm was developed for the two control charts and implemented on visual basic VB6.0. The obtained results show that the combined EWMA and EWMV control chart is very sensitive in detecting shift in production process and every shift in the process mean is always preceded by shift in the process variability.
Authors and Affiliations
K. S. , Adekeye, Bada Olatunbosun
Keywords
Related Articles
- EP ID EP459032
- DOI -
- Views 78
- Downloads 0
Identification of the Opportunities for Future Development of Tidal Energy
An overview of status of development of tidal energy is given in this article. To reduce the dependance on fossil fuel and imported energy resources, the need for ocean energy is a global demand in developing countries....
Design and Development of Electro-Mechanical Twins Tipping Buckets Runoff-Meter
Electro-mechanical tipping bucket runoff-meter was designed and developed to measure surface runoff water using locally-sourced components. The instrument consists of metallic-fabricated runoff plot area of 2 m2, depth 0...
Poor Workmanship in Construction of Low Cost Housing
Most defects in construction projects are due to human error. In other word, we can say that human error happened due to poor performance in workmanship during construction of a building. Poor workmanship in housing cons...
Exploitation Solution of the Wind Potential in the Danube Gorge
This paper proposes a solution to exploit the wind potential of the Danube cluster by storing it in the Iron Gates I reservoir lake, through pumping the water downstream of the hydroelectric power plant. Storing energy b...
Investigations into the Mechanical Properties and Microstructural Behavior of Foreign and Locally Fabricated Brake Disc
The present work reports investigations on mechanical and microstructural properties of foreign and locally fabricated brake disc. From safety point of view, brake disc is a crucial component of the braking system. Fore...