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Slices Analysis Method of Petri nets in FMS Using the Transitive Matrix

  • Kim, Jung-Won;Lee, Jong-Kun;Song, Yu-Jin;Kim, Jong-Wook
    • 제어로봇시스템학회:학술대회논문집
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    • 2001.10a
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    • pp.132.3-132
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    • 2001

  • In this paper, we focus on the analysis of the scheduling problem in FMS after slicing off some sub-nets using the transitive matrix. This class of Time Petri nets is obtained by merging subnets based on the machine's operations. We can divide original system into some subnets based on machine's operations using Time Petri nets slice and analyze the feasibility time in each schedules. In this paper, we show the usefulness of transitive matrix to slice off some subnets from the original net, and explain on an example.

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CHARATERISTIC IMPROVEMENT OF 5 PHASE STEP MOTOR BY USING MICRO-STEP DRIVER IN X-Y AXIS SOLDERING MACHINE

  • Park, Chul-Soon;Kim, Sung-Hoon;Ahn, Ho-Kyun;Park, Seung-Kyu
    • Proceedings of the KIPE Conference
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    • 1998.10a
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    • pp.97-100
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    • 1998

  • In this paper, micro step driving method is used for the high performance motion control and low vibration and low noise in an X-Y axis soldering machine for factory automation. The improvement of the electrical and mechanical driving characteristic of a stepping motor is achieved by applying microstep driver.

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