Computer Control Systems Techniques and Applications in Manufacturing Systems
Reliable operations, quality assurance, reactivity and modularity are essential to ensure economic interest in the manufacturing system facilities. These aims can be achieved by integrating control loop functions into each manufacturing level, including the design of the product, the maintenance of the means of production and, in particular, the manufacturing process ensure immediate remedy once a fault is detected. The integration of these functions allows us to search for a global optimisation of the production quality. This integration needs a suitable structure which must be distributed since the intelligence of the various functions is geographically distributed. This requires methods and efficient tools for the use and maintenance of:
integration in a Computer Integrated Manufacturing (CIM) structure;
databases which store this information and achieve their coherence and consistency;
real-time, distributed and reusable computer control systems which have to work and cooperate permanently;
communication networks which transmit all types of information.
The presentation of these control functions is limited to the level of a flexible manufacturing cell. The main concepts are:
quality management in the manufacturing system;
maximum flexibility of the system related to the shop floor level, products and control;
quality information system using entity-relationship modeling; and
distribution and modularity of the control system by means of the definition of a conceptual model and its implementation with the ISO standard manufacturing message specification.