Monitoring and Diagnosis of Fermentation Processes
This chapter deals with monitoring and diagnosing a fedbatch fermentation process by means of a real-time expert system. The first part of the chapter presents the rule-based expert system BIOTECH which, among other tasks, detects the abnormalities in the process behaviour beforehand, advises the operator about what to do to correct unwanted behaviours of the process, assesses the state of unmeasured variables and may be used as a computeraided process monitoring instruction system. Although BIOTECH assumes an underlying model of causality paths of the process, this model is not explicitly represented. To enhance robustness and generality, we have undertaken to devise a model-based approach to account for influence analysis and computation among the process variables. This approach is implemented in the model- based reasoning module CA-EN (Causal Engine).
KeywordsExpert System Fermentation Process Concentration Rate Global Constraint Process Pattern
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