NDLI: Generation of restart states for manufacturing systems with discarded workpieces

Content Provider	IEEE Xplore Digital Library
Author	Andersson, K. Lennartson, B. Falkman, P. Fabian, M.
Copyright Year	2009
Description	Author affiliation: Chalmers Automation, Chalmers University of Technology, SE-412 96 Gothenburg, Sweden (Andersson, K.; Lennartson, B.; Falkman, P.; Fabian, M.)
Abstract	In earlier work we presented a method for restart of manufacturing systems. After correction of an error, the system resumes normal production by returning to a certain restart state in the control function, and from there reexecutes parts of the work schedule. In the present paper the method is extended to handle also systems where some, but not necessarily all, workpieces are discarded during the error correction preceding the restart. The restart process must then replace the discarded workpieces with new ones. The workpieces that remain in the cell may limit the possibilities of executing certain operations needed to process the new workpieces correctly, thus complicating the restart. Properties of the restart states that guarantee a correct restart are defined, typical situations that make the system impossible to restart are presented, and some suggestions are given for modifications that make the system restartable.
Starting Page	191
Ending Page	196
File Size	373587
Page Count	6
File Format	PDF
ISBN	9781424445783
DOI	10.1109/COASE.2009.5234175
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-08-22
Publisher Place	India
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Manufacturing systems Error correction Production systems Computer errors Industrial control Automatic control Electrical equipment industry Manufacturing automation Control systems Job shop scheduling
Content Type	Text
Resource Type	Article

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