Title :
Coordination of batches in flexible production
Author :
Akesson, Knut ; Fabian, Martin ; Vahidi, Arash
Author_Institution :
Dept. of Signal & Syst., Chalmers Univ. of Technol., Goteborg, Sweden
Abstract :
In chemical batch control applications the description of how to produce a batch can be expressed as a sequence of operations, some of which many be parallel or alternative. Such a description is called a recipe. Each operation can be carried out by a resource, e.g. vessel or reactor. When several recipes execute concurrently within a plant there is a possibility for deadlock between recipes that share resources. A deadlock might lead to the loss of an entire batch, something that is costly and must therefore be avoided. This paper focuses on the generation of a model that can be used for synthesizing a supervisor that prevents the batch control system from running into deadlock situations. The discussed recipes are highly flexible. In this paper recipes with alternative resources for operations, and with alternative operations, are discussed
Keywords :
batch processing (industrial); chemical industry; process control; production control; resource allocation; synchronisation; batch processing; chemical industry; deadlock avoidance; flexible production; recipe; resource allocation; resource sharing; supervisory control; Automatic control; Batch production systems; Chemical industry; Chemical technology; Control system synthesis; Control systems; IEC standards; Inductors; Quality assurance; System recovery;
Conference_Titel :
American Control Conference, 2000. Proceedings of the 2000
Conference_Location :
Chicago, IL
Print_ISBN :
0-7803-5519-9
DOI :
10.1109/ACC.2000.878706