Fault diagnosis of batch processes using discriminant model

Fault diagnosis of batch processes using discriminant model

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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: ,
Abstract:

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.

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