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PLC 제어 자동화 라인의 구동 신호 패턴 인식을 통한 비 정상 구동의 자동알람 방법론
박형태(Hyeongtae Park),남중호(Jungho Nam),조진영(Jinyoung Cho),왕지남(Jinam Wang),박상철(Sangchul Park) (사)한국CDE학회 2011 한국 CAD/CAM 학회 학술발표회 논문집 Vol.2011 No.1
This paper refers an approach to automatic diagnostic system of PLC-controlled automated manufacturing system. Programmable Logic Controller (PLC) plays a key role to operate the manufacturing system. It is used not only to control the automatic facilities, but also to handle the abnormal circumstances during process operation. Even though the PLC part for abnormal situation is programmed, however, it is often takes much time and effort to find out which device encountered the problems and what caused. This paper proposes an approach which helps to overcome these diagnostic issues. The proposed approach has three steps. First, it builds standard normal signal patterns from the stable operation cycles. Second, comparing and analyzing between normal pattern and gathered real time signals. And last, it reports the pattern differences and the possible causes when error occurred.