Process control supervision using qualitative models
Richard Stobart, N. R. Shadbolt · 1990
In modern process and power plant the cost of installation demands operation at peak efficiency for prolonged periods. This places significant demands on the control and monitoring systems to keep efficiency high while giving significant warning of a drop in efficiency or a component failure. We present an approach to process monitoring based on Qualitative Models which are used as a framework in which a range of monitoring techniques are located. The methods are described in the context of diagnosing faults in a heat exchanger. We present an application based on a Cogeneration scheme which highlights many of the issues in process monitoring.