Abstract
In the first report, an attemp was done to develop an expert system with the knowledge base that describes the relations among many components in the system for the sequential control of a marine diesel engine plant.The system was proved to work well in such a complicated operation.
In the present report the idea of the knowledge base with hierarchical structure is introduced. Then, the present knowledge base contains two different parts.The first is a kind of common knowledge base that describes the input-output relations of every component included usually in these systems and the hierarchical procedure is employed in the descriptions. The second is used for connecting the knowledge base of the components into a system, being based on the database that describes the component connections in the individual engine plant.Therefore the knowledge base can be easily built up for an individual plant by writing only the database of the component connections.
It is finally pointed out that the new knowledge base system can be constructed at ease and work successfully.
