Portal de Periódicos da CAPES

Current research on profile monitoring

2007; Associação Brasileira de Engenharia de Produção; Volume: 17; Issue: 3 Linguagem: Inglês

10.1590/s0103-65132007000300002

1980-5411

William H. Woodall,

Advanced Statistical Methods and Models

In many applications the quality of a process or product is best characterized and summarized by a functional relationship between a response variable and one or more explanatory variables. Profile monitoring is used to understand and to check the stability of this relationship over time. At each sampling stage one observes a collection of data points that can be represented by a curve (or profile). In some calibration applications, the profile can be represented adequately by a simple linear regression model, while in other applications more complicated models are needed. The purposes of this paper are to review recent research on the use of control charts to monitor process and product quality profiles and to encourage further research in this area.