It creates a need to transform these data to useful information that helps users to make rational decisions. In addition, the decision process using these information depends on whether they are provided in an appropriate or a timely manner to the user. A paper machine is equipped with tens of high-power electric motors.
Process measurements data is stored in a database which is fed by sensors.
End users wanted a single mechanism which integrates two of their needs. First, they wanted to be warned when the database reaches situations of interest. On the other hand. The purpose was to prevent failures of the drive system. The proposed solution employed a knowledge-based approach which was based on the merging of fuzzy logic concepts and active database capabilities.