Abstract :
Logic control is used to govern both discrete event systems such as manufacturing systems, pallets and AGVs, and continuous time systems, to perform start-up sequences of different control loops, to activate emergency procedures, to handle faults and protection devices, to configure controllers´ parameters. When dealing with complex automation systems, inevitably the design involves a number of people and of phases, so that its development and its maintenance is often a source of troubles. In this respect, precious criteria are the standardization, the modularization and the late refinement (that is the possibility to refine a design at the latest possible moment). The paper is based on these concepts, and in particular discusses modeling, analysis, and a synthesis procedure
Keywords :
control system analysis; control system synthesis; complex automation systems; continuous time systems; controllers parameters configuration; discrete event systems; emergency procedures; fault handling; late refinement; logic control systems analysis; modeling; modular synthesis; modularization; multilevel synthesis; protection devices; standardization; start-up sequences; synthesis procedure; Automatic control; Continuous time systems; Control system synthesis; Control systems; Design automation; Discrete event systems; Logic devices; Manufacturing automation; Manufacturing systems; Protection;
