Regresar

Intelligent industrial control

Abstract:

Most of the available industrial adaptive controllers are developed with special features, that is, application oriented, and conceived for stand-alone operation. Modularity, reliability and easy operation ask for distributed intelligent control systems, where local controllers can perform adaptive or direct digital control supervised by a higher level computer controller. In this paper the most common features of advanced industrial controlers are reviewed. A control scheme based on a console-operated computer supervising the operation of a net of local controllers is presented. Typical tasks of these controllers are: monitoring the process and determining the operation mode (i.e., start-up, normal operation, overloading operation, shut-down, etc.), adaption scheme selection, assignment of variables to local controllers and operator interface. A general discussion of the properties of this scheme is followed by its partial implementation based on available controllers.