Author/Authors :
كرامت پور، مهدي نويسنده MSc, Department of Industrial & Mechanical Engineering, Qazvin Branch, Islamic Azad University, Qazvin, Iran Keramatpour, Mehdi , اخوان نياكي، سيد تقي نويسنده Department of Industrial Engineering, Sharif University of Technology, Tehran 11155-9414, Iran Akhavan Niaki, Seyed Taghi , اميري ، اميرحسين نويسنده ,
Abstract :
In some statistical process control applications, quality of a process or product can be characterized by a relationship between a response and one or more independent variables, which is typically referred to a profile. In this paper, polynomial profiles are considered to monitor processes in which there is a first-order autoregressive relation between the error terms in each profile. A remedial measure is first proposed to eliminate the effect of autocorrelation in phase-?? monitoring of auto-correlated profiles. Then, three methods are employed to monitor polynomial profiles where their performances are compared using the average run length criterion.
