Title :
Designing transitory routing controllers for hybrid plants
Author :
Fiedler, Claudia ; Meyer, Wolfgang ; Von Drathen, Arne
Author_Institution :
Hamburg Univ. of Technol.
Abstract :
We describe a generic routing controller for nonlinear flow shops, and the respective design and verification tool based on coloured timed Petri nets. The design methodology integrates logical and performance-related control for discrete event systems by introducing a time invariant process V. V stands for the cycle time of a repetitive production system and for the stationary sequence of transport and move operations. Application site is a complex plant with 26 sequential/parallel workstations and process plans of 28 operations including multiple loops. The transport system is the bottleneck resource performing as a non-linear GMEC (general mutual exclusion constraint) on plant behaviour
Keywords :
Petri nets; closed loop systems; control system synthesis; discrete event systems; flow shop scheduling; graph colouring; industrial control; time-varying systems; coloured timed Petri net; discrete event system; general mutual exclusion constraint; hybrid plant; hybrid systems; multiple loops; net invariant; nonlinear GMEC; nonlinear flow shop; parallel workstation; plant behaviour; process plan; repetitive production system; sequential workstation; time invariant process; transitory routing controller; transport system; verification tool; Control systems; Design methodology; Discrete event systems; Job shop scheduling; Manufacturing processes; Petri nets; Routing; System recovery; Throughput; Workstations;
Conference_Titel :
Control Applications, 2005. CCA 2005. Proceedings of 2005 IEEE Conference on
Conference_Location :
Toronto, Ont.
Print_ISBN :
0-7803-9354-6
DOI :
10.1109/CCA.2005.1507249
