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새로운 회전자 속도 추정 알고리즘을 이용한 속도 센서 없는 유도전동기의 벡터 제어
전희종(Hi-Jong Jeon),정을기(Eull-Gi Jung),이석태(Suck-Tae Lee),최우진(Woo-Jin Choi) 한국조명·전기설비학회 1994 한국조명·전기설비학회 학술대회논문집 Vol.1994 No.-
Several vector control systems of induction motors without speed sensors have been proposed. These methods have a disadvantage that the rotor resistance variation causes the estimation error of the motor speed. This paper proposes a new rotor speed estimation algorithm for speed sensorless systems. This is a very simple method by which the exact speed can be computed directly. Furthermore the method dosen"t require the information of the rotor resistance which makes if free from the variation of the rotor resistance. The estimated speed is used as a feedback in an indirect vector control system. The effectiveness of the proposed method were verified by digital simulation.
마이크로 콘트롤러를 이용한 이상전류 데이터 처리기에 관한 연구
田喜鍾,林炳國,鄭乙基 충주대 산업과학기술연구소 1994 産業科學論文集 Vol.2 No.-
The development of the measurement technology has occupied an important position of not only the electrical, electronic but also scientific technology sphere. In this paper, these are improved by using single-chip microcontroller which detects the abnormal current and saves in back-up RAM after digitizing. By the flexible storage method, the efficient processing of the memory is convenient. The data in the memory can be transmitted to the personal computer by the serial communication, and also be independently transmitted by the parallel communication to the personal computer which is interfaced with. The software to control system components are structured in assembler and C language, in order to process and analize data the software is used in C language.