The application of supervisory control concepts in the control of batch process plants is investigated in the paper. Supervisory control issues in flexible batch plants include co-ordination, resource allocation and process management. The paper utilises the Petri net based supervisory control framework to develop appropriate solutions. A straightforward approach of translating developed Petri ...

Because of their nondeterministic nature of behaviour, the supervisory control of manufacturing systems must be carried out in closed loop. This trait greatly increases the size and complexity of the Discrete-Event System (DES)-based supervisorycontrollers of manufacturing systems. In an attempt t o cope with this complexity, a Hybrid Supervisory Controller HSC) i s proposed. It splits pervisor...

Implementation of complex discrete event manufacturing systems can be considerably simplified by use of general reusable software modules, representing the physical components. At the same time, construction of the control system can be facilitated by use of formal methods for automatic generation of the control laws. These two aspects can be joined into a general concept with object oriented m...