The Experts below are selected from a list of 4224 Experts worldwide ranked by ideXlab platform
Naehyuck Chang - One of the best experts on this subject based on the ideXlab platform.
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a translation method for Ladder Diagram with application to a manufacturing process
International Conference on Robotics and Automation, 1999Co-Authors: Wook Hyun Kwon, Naehyuck ChangAbstract:This paper proposes a translation method for programmable logic controllers (PLCs) used in most automation systems. It describes detailed steps of the method that converts from a Ladder Diagram directly to a native code. A general-purpose DSP (digital signal processor) based PLC with the translation method is implemented. A benchmark test in an automotive manufacturing process shows that the proposed translation method fairly speeds up the execution in comparison with existing interpretation methods.
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ICRA - A translation method for Ladder Diagram with application to a manufacturing process
Proceedings 1999 IEEE International Conference on Robotics and Automation (Cat. No.99CH36288C), 1Co-Authors: Hyung Seok Kim, Wook Hyun Kwon, Naehyuck ChangAbstract:This paper proposes a translation method for programmable logic controllers (PLCs) used in most automation systems. It describes detailed steps of the method that converts from a Ladder Diagram directly to a native code. A general-purpose DSP (digital signal processor) based PLC with the translation method is implemented. A benchmark test in an automotive manufacturing process shows that the proposed translation method fairly speeds up the execution in comparison with existing interpretation methods.
Pablo Denes - One of the best experts on this subject based on the ideXlab platform.
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the Ladder Diagram a 100 year history
American Journal of Cardiology, 2008Co-Authors: Nils P. Johnson, Pablo DenesAbstract:The Ladder Diagram (also called a Laddergram) remains a popular visual aid when graphically representing the mechanism of arrhythmia. It disentangles atrial and ventricular electrical activity and gives explicit representation to the sinoatrial and atrioventricular nodes. More than 100 years after the first published Ladder Diagrams, this report reviews their origins, development, and limitations. Ladderlike Diagrams have existed since 1885, first applied to venous and arterial pulsation timing or waveform tracings and later in 1920 alongside electrocardiograms to explain the generation and propagation of electrical impulses in the heart. Two examples are presented in which the underlying mechanism of arrhythmia either was predicted by a Ladder Diagram and later confirmed by intracardiac recordings (atrioventricular nodal reentrant tachycardia) or underwent evolution of its Ladder Diagram depiction as the pathophysiology became better understood (atrial flutter). In general, the Ladder Diagram represents well abnormalities of impulse conduction but is less explicit with abnormalities of impulse formation. In conclusion, the surprising scarcity of major changes since the introduction of the Ladder Diagram testifies to its power to deal with a range of arrhythmogenic mechanisms that were unknown at the time of its development.
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The Ladder Diagram (a 100+ year history).
The American journal of cardiology, 2008Co-Authors: Nils P. Johnson, Pablo DenesAbstract:The Ladder Diagram (also called a Laddergram) remains a popular visual aid when graphically representing the mechanism of arrhythmia. It disentangles atrial and ventricular electrical activity and gives explicit representation to the sinoatrial and atrioventricular nodes. More than 100 years after the first published Ladder Diagrams, this report reviews their origins, development, and limitations. Ladderlike Diagrams have existed since 1885, first applied to venous and arterial pulsation timing or waveform tracings and later in 1920 alongside electrocardiograms to explain the generation and propagation of electrical impulses in the heart. Two examples are presented in which the underlying mechanism of arrhythmia either was predicted by a Ladder Diagram and later confirmed by intracardiac recordings (atrioventricular nodal reentrant tachycardia) or underwent evolution of its Ladder Diagram depiction as the pathophysiology became better understood (atrial flutter). In general, the Ladder Diagram represents well abnormalities of impulse conduction but is less explicit with abnormalities of impulse formation. In conclusion, the surprising scarcity of major changes since the introduction of the Ladder Diagram testifies to its power to deal with a range of arrhythmogenic mechanisms that were unknown at the time of its development.
Guanqun Zhang - One of the best experts on this subject based on the ideXlab platform.
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a soft plc Ladder Diagram edit software implemented based on table technology
Pacific-Asia Workshop on Computational Intelligence and Industrial Application, 2008Co-Authors: Le Liu, Guanqun ZhangAbstract:This paper designs a table class which can be used to edit PLC Ladder Diagram, and successfully develops software using C++ language. The main advantages of the software are as follows: the size of table cell occupied by the Ladder Diagram device unit can be set arbitrarily; the number of devices has no restriction; the parameters of PLC device unit can be directly set on Ladder Diagram; the software is intuitionistic in expressing application of complex PLC Ladder Diagram.
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PACIIA (1) - A Soft PLC Ladder Diagram Edit Software Implemented Based on Table Technology
2008 IEEE Pacific-Asia Workshop on Computational Intelligence and Industrial Application, 2008Co-Authors: Le Liu, Guanqun ZhangAbstract:This paper designs a table class which can be used to edit PLC Ladder Diagram, and successfully develops software using C++ language. The main advantages of the software are as follows: the size of table cell occupied by the Ladder Diagram device unit can be set arbitrarily; the number of devices has no restriction; the parameters of PLC device unit can be directly set on Ladder Diagram; the software is intuitionistic in expressing application of complex PLC Ladder Diagram.
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PACIIA (1) - An Algorithm about Transforming PLC Ladder Diagram to Instruction List Based on Series-Parallel Merging Method
2008 IEEE Pacific-Asia Workshop on Computational Intelligence and Industrial Application, 2008Co-Authors: Le Liu, Guanqun ZhangAbstract:Usually there are 3 steps in transforming PLC Ladder Diagram to instruction list: including mapping Ladder Diagram to AOV digraph, transforming AOV digraph to binary trees and transforming binary trees into instruction list. The second step is the most critical and complicated. This paper proposes a method that can transform the AOV digraph to binary trees by using Series-parallel Merging thought, which is visual and easy to realize. An example of transformation is given, which introduced the algorithm and transforming steps.
Wook Hyun Kwon - One of the best experts on this subject based on the ideXlab platform.
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a translation method for Ladder Diagram with application to a manufacturing process
International Conference on Robotics and Automation, 1999Co-Authors: Wook Hyun Kwon, Naehyuck ChangAbstract:This paper proposes a translation method for programmable logic controllers (PLCs) used in most automation systems. It describes detailed steps of the method that converts from a Ladder Diagram directly to a native code. A general-purpose DSP (digital signal processor) based PLC with the translation method is implemented. A benchmark test in an automotive manufacturing process shows that the proposed translation method fairly speeds up the execution in comparison with existing interpretation methods.
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ICRA - A translation method for Ladder Diagram with application to a manufacturing process
Proceedings 1999 IEEE International Conference on Robotics and Automation (Cat. No.99CH36288C), 1Co-Authors: Hyung Seok Kim, Wook Hyun Kwon, Naehyuck ChangAbstract:This paper proposes a translation method for programmable logic controllers (PLCs) used in most automation systems. It describes detailed steps of the method that converts from a Ladder Diagram directly to a native code. A general-purpose DSP (digital signal processor) based PLC with the translation method is implemented. A benchmark test in an automotive manufacturing process shows that the proposed translation method fairly speeds up the execution in comparison with existing interpretation methods.
Lin Heng - One of the best experts on this subject based on the ideXlab platform.
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Transformation from PLC Ladder Diagram to Lists
Computer Engineering, 2007Co-Authors: Lin HengAbstract:To realize the transformation from Ladder Diagram to instruction list,a new algorithm is introduced.It translates the Ladder Diagram into directed acyclic graph,sorts and unites the serial and parallel relationship of the graph,and stores the serial-parallel structure in lists,generates the instruction list based on the lists.Traditional topological sort algorithm applied in the transformation does not always provide the correct instruction list when the structure of the Ladder Diagram is complex,while the new algorithm overcomes the flaw.The new algorithm provides the function of checking the logical faults in the Ladder Diagram.The time complexity of the new algorithm is O(n) in the best situation,O(n2) in the worst situation,which is basically the same with the topological sort algorithm.In normal condition,it is a little better than the topological sort algorithm.
