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소수의 전자소자를 사용한 간이형 AVR의 시작에 관한 연구
박재생(Jae-Saeng Park),안병원(Byoung-Won Ahn),이성근(Sung-Kun Lee),김윤식(Yoon-Sik Kim) 한국해양대학교 해사산업연구소 1994 海事産業硏究所論文集 Vol.4 No.-
To maintain terminal voltage of a generator at constant value automatic voltage regulator(AVR) is used by adjusting field current of a generator. In almost all industrial field, self-exciting type generator is usually adopted. So in this paper, the field of our discussion lies on shunt type AVR mainly adopted in self-exciting type generator which shunt field current to regulate terminal voltage. As shunt device here, transistor or thyristor is used, and also PID control algorithm is applied in this type of AVR. Even in minute voltage variation it can work satisfactorily both in voltage recovery and its quick response, because of sophisticated control circuit. But, in this paper we set up a very simple AVR composed of a small number of electronic devices based on transistor shunt circuit and detection circuit of voltage deviation to realize the need for low cost and easiness of AVR handling. Shunt device is installed par all to field current circuit to regulate exciting current by by-passing the current and deviation voltage detection circuit detects the voltage deviation between ouput and reference voltage of generator to control shunt circuit current. Although proposed AVR circuit in this paper is not so effective as PID control circuit type AVR, set up AVR circuit can be composed with a remarkably small number of electronic devices. With this study, followings are pointed out. 1. It is confirmed that test set-up AVR can be used in industrial field. 2. Very low cost AVR can be made up using Tr., OP Amp. and voltage regulator. 3. It can be said that simplicity and easiness are realized in maintenance and handling with this AVR for trial set up and power consumption was considerably reduced.
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비 간섭 슬라이딩 모드 기법을 이용한 로봇 매니퓰레이터의 궤도제어
남택근(Taek-Kun Nam),노영오(Young-Oh Roh),안병원(Byoung-Won Ahn) 한국마린엔지니어링학회 2004 한국마린엔지니어링학회 학술대회 논문집 Vol.2004 No.-
In this paper, we proposed the decoupling VSS controllers for a trajectory control of a two degrees of freedom SCARA type manipulator. We decoupled the position and velocity of a manipulator tip by using a nonlinear error functions. The reference inputs of the controller can be decided directly from the desired position and velocity. Simulation result is provided to verify the effectiveness of the proposed control scheme.
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