대한전기학회:학술대회논문집 (Proceedings of the KIEE Conference)

대한전기학회 (The Korean Institute of Electrical Engineers)
권호 표지

분산형 PLC 시스템에서의 고장 허용 제어

Fault Tolerant Control for Distributed Programmable Logic Controller System

  • 정영미 (부경대학교 대학원 메카트로닉스) ;
  • 정석권 (부경대학교 기계공학부)
  • Jeong, Young-Mi (Mechatronics Engineering, Graduate School, Pukyong National University) ;
  • Jeong, Seok-Kwon (School of Mechanical Engineering, Pukyong National University)
  • 발행 : 2003.07.21
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초록

Most of distributed PLC system is secured reliability of the system by fully duplicated controller. But it costs too much. In this paper, we proposed fault tolerant control using minimum spare controllers. First, the system is modeled using Galois field. Next, we designed additional spare controllers using the parity code of two dimensions. Finally, the algorithm for producing estimated output in remote I/O when the fault occurs was suggested. This method will be applied to an automatic system in order to increase reliability and improve cost performance.

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