Article ID: | iaor20043551 |
Country: | United Kingdom |
Volume: | 42 |
Issue: | 3 |
Start Page Number: | 597 |
End Page Number: | 612 |
Publication Date: | Jan 2004 |
Journal: | International Journal of Production Research |
Authors: | Kim Kwang-Jae, Cho Hyun-Woo |
A new statistical online diagnosis method for a batch process is proposed. The proposed method consists of two phases: offline model building and online diagnosis. The offline model building phase constructs an empirical model, called a discriminant model, using various past batch runs. When a fault of a new batch is detected, the online diagnosis phase is initiated. The behaviour of the new batch is referenced against the model, developed in the offline model building phase, to make a diagnostic decision. The diagnosis performance of the proposed method is tested using a dataset from a polyvinyl chloride batch process. It has been shown that the proposed method outperforms existing principle components analysis-based diagnosis methods, especially at the onset of a fault.