NDLI: A new approach to evaluate ladder logic diagrams and Petri nets via the IF-THEN transformation

Content Provider	IEEE Xplore Digital Library
Author	Jin-Shyan Lee Pau-Lo Hsu
Copyright Year	2000
Description	Author affiliation: Dept. of Electr. & Control Eng., Nat. Chiao-Tung Univ., Hsinchu, Taiwan (Jin-Shyan Lee)
Abstract	The 'basic element' approach has been proposed for evaluating the complexity of sequence control designs using the ladder logic diagram (LLD) and Petri net (PN). Since basic elements for different structures have different physical meanings, the basic element approach may lead to misleading comparison and unreliable results. Thus, a suitable and unified measure for analyzing the LLD and PN is pursued. In this paper, a new approach via the IF-THEN transformation is proposed. The same measure obtained from the IF-THEN rules and corresponding logic operators can then be suitably applied to both LLD and PN. The example provided is of five sequences with increasing complexity for a stamping process. It indicates that the proposed IF-THEN transformation is more appropriate than the basic element approach in real applications. Moreover, results clearly show that the PN is more suitable than LLD for sequence control design as processes become more complex.
Sponsorship	Raytheon
Starting Page	2711
Ending Page	2716
File Size	490668
Page Count	6
File Format	PDF
ISBN	0780370872
ISSN	1062922X
DOI	10.1109/ICSMC.2001.972976
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2001-10-07
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Logic Petri nets Programmable control Control systems Manufacturing systems Relays Coils Counting circuits Solenoids Control design
Content Type	Text
Resource Type	Article

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