KIISE Transactions on Computing Practices (정보과학회 컴퓨팅의 실제 논문지)

Korean Institute of Information Scientists and Engineers (한국정보과학회)
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Preventive Maintenance System based on Expert Knowledge in Large Scale Industry

대규모 산업시설을 위한 전문가 지식 기반 예방정비시스템

  • Received : 2016.01.04
  • Accepted : 2016.10.27
  • Published : 2017.01.15
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Abstract

Preventive maintenance is required for best performance of facilities in large scale industry. Ultimately, the efficiency of production is maximized by preventing the failure of facilities in advance. Typically, regular maintenance is conducted manually; however, it is hard to prevent repeated failures. Also, since measures to prevent failure depend on proactive problem-solving by the facility expert, they have limitations when the expert is absent or diagnosis error is made by an unskilled expert. Alarm system is used to aid manual facility diagnosis and early detection. However, it is not efficient in practice, since it is designed to simply collect information and is activated even with small problems. In this study, we designed and developed an automated preventive maintenance system based on expert's experience in detecting failure, determining the cause, and predicting future system failure. We also discussed the system structure designed to reuse the expert's knowledge and its applications.

예방정비는 대규모 산업시설에서 설비의 성능을 최적으로 유지하는 활동을 의미하며, 궁극적으로 고장을 미연에 방지하여 생산 효율을 극대화하는 것을 목적으로 한다. 일반적으로 인력에 의한 주기적인 정비가 이루어지지만, 지속적으로 발생하는 고장을 방지할 수 없는 문제가 있다. 또한, 문제를 조기에 해결하기 위한 고장에 대한 조치는 설비 전문가에 의존하기 때문에, 전문가의 부재 상황이나 미숙련된 전문가에 의한 진단 오류로 인한 대응의 한계가 있다. 인력에 의존한 설비 진단과 문제의 조기 발견을 돕기위해 알람 시스템이 활용되고 있지만, 단순 정보 수집을 위해 설계되고, 방대하게 알람을 발생시키므로 실제적인 효용성이 없다. 본 논문에서는 시스템에 의한 고장징후 포착과 문제의 원인 및 향후 발생할 문제를 파악하기 위해서, 전문가의 경험지식을 시스템 지식으로 구축을 통한 자동화된 예방정비시스템을 설계 및 개발하였으며, 전문가 지식을 재이용하기 위한 시스템의 구조와 활용 방안에 대해서 논한다.

Keywords

Acknowledgement

Supported by : Small and Medium Business Administration, IITP(Institute for Information & communications Technology Promotion, National Research Foundation of Korea(NRF)

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