Title :
Coordinated logic control for reconfigurable machining systems
Author :
Lucas, M.R. ; Endsley, E.W. ; Tilbury, D.M.
Author_Institution :
Dept. of Mech. Eng. & Appl. Mech., Michigan Univ., Ann Arbor, MI, USA
Abstract :
The coordinated logic control problem for reconfigurable machining systems is considered. Given a reconfigurable machine tool which is composed of a set of machine modules, a reconfigurable control system can be designed from a set of control modules. At the lowest level, there is one control module for each physical machine module. At the highest level, there is a module for the user interface and the process plan. We determine a set of conditions necessary to ensure non-blocking behavior of the control system. Using these conditions, we devise a methodology for constructing modular controllers, and demonstrate via an example
Keywords :
closed loop systems; control system synthesis; discrete event systems; finite state machines; formal languages; machine tools; machining; control module; coordinated logic control; modular controllers; nonblocking behavior; reconfigurable machine tool; reconfigurable machining systems; user interface; Automata; Control systems; Costs; Discrete event systems; Machining; Manufacturing systems; Mechanical engineering; Reconfigurable logic; Three-term control; User interfaces;
Conference_Titel :
American Control Conference, 1999. Proceedings of the 1999
Conference_Location :
San Diego, CA
Print_ISBN :
0-7803-4990-3
DOI :
10.1109/ACC.1999.786298