서지주요정보
PLC 고장 진단 시스템을 위한 알고리즘 개발에 관한 연구 = A study on the development of an algorithm for PLC faulat diagnosis system
서명 / 저자 PLC 고장 진단 시스템을 위한 알고리즘 개발에 관한 연구 = A study on the development of an algorithm for PLC faulat diagnosis system / 방원철.
저자명 방원철 ; Bang, Won-Chul
발행사항 [대전 : 한국과학기술원, 1996].
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소장정보

등록번호

8006249

소장위치/청구기호

학술문화관(문화관) 보존서고

MEE 96034

SMS전송

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초록정보

In this thesis, an algorithm for PLC(Programmable Logic Controller) fault diagnosis system is proposed and experimentation is conducted with a PLC and a virtual plant. To build a fault diagnosis system, the structure of a widely used PLC, is studied and fault examples are analyzed. From this, fault diagnostic method is developed which consists of self diagnostics, backward tracking algorithm, query with keywords of symptoms, and test by sequence programs for each unit. The self diagnostics given by PLC makers, which is a unique method to diagnose PLC till now in the field, is combined with proposed algorithm by modularized data base for each PLC. The backward tracking algorithm by analysis of the user sequence program can help to find the external faults for sensors. Query with keywords of the fault symptoms is to help to find the fault especially when similar symptoms are shown. Test sequence programs are used to test each unit to find where the location is. It is shown experimentally that the proposed algorithm can find the faults which a typical self diagnostics in the commercially available PLC cannot.

서지기타정보

서지기타정보
청구기호 {MEE 96034
형태사항 iii, 56 p. : 삽도 ; 26 cm
언어 한국어
일반주기 저자명의 영문표기 : Won-Chul Bang
지도교수의 한글표기 : 변증남
지도교수의 영문표기 : Zeung-Nam Bien
학위논문 학위논문(석사) - 한국과학기술원 : 전기 및 전자공학과,
서지주기 참고문헌 : p. 55-56
주제 논리연산장치
고장 진단
데이터 베이스
PLC
Programmable logic controller
Fault diagnosys
Data-base
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