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강정욱(Jung-Yoog Kang),전용호(Yong-Ho Jeon) 한국전자통신학회 2019 한국전자통신학회 논문지 Vol.14 No.1
본 연구는 유리차수 미분의 수학적인 방법을 시스템의 응답을 제어하는 제어기에 적용하고자 한다. 일반적인 PID제어기의 라플라스 변환은 의 정수지수를 갖게 된다. 유리차수의 미분은 라플라스 변환에서 에 대한 유리수 지수를 갖게 된다. 따라서 이를 제어기로 구성하기 위해서는 유리수 지수에 대한 설계가 적절하지 않아 이산시간으로 변환하여 설계하는 방법을 제안한다. 이를 표준 2차 시스템에 적용하여 성능을 살펴보고, 산업현장에서 많이 사용되는 솔레노이드밸브에 적용한다. 외란 상태의 추정이 가능하도록 루엔버거 관측기를 설계하고 관측된 상태에 대하여 유리차수 제어기를 적용하여 균일하며 정밀한 제어성능을 얻을 수 있었다. 정상상태의 위치오차가 0.1 [%]이내이고, 기동시간이 약 0.3 [s]이내의 정밀하며 균일한 위치제어성능 가짐을 확인할 수 있었다. This study aims to apply the mathematical method of fractional order derivatives to the controller that controls the system response. In general, the Laplace transform of the PID controller has an exponent of the integer order of s. The derivative of the fractional order has a fractional exponent of s when it is transformed by Laplace transform. Therefore, this controller proposes a design method with the result of discrete time conversion. Because controllers with fractional exponents of s are not easy to design. This controller is applied to a standard secondary system and its performance is examined. Then, it applies to solenoid valve which is widely used in industrial field. A Luenberger‘s observer was designed to estimate the disturbance state and the observed state was applied to the fractional order controller. As a result, uniform and precise control performance was obtained. It was confirmed that the position error of the steady state is within 0.1 [%] and the rising time is within about 0.03 [s].
주정규(J.K.Ju),안태영(T.Y.Ahn),장평우(P.W.Jang),정인범(L.B.Jeong),최광보(G.B.Choi) 전력전자학회 2003 전력전자학술대회 논문집 Vol.2003 No.7(1)
This paper present an investigation of the influence on the PFC(power factor correction) circuit with characteristics variation of MPP (Molybdenum permalloy powder) core. The experiment results of the 1.5kW class Boost converter for PFC rectifier with the average current mode control are evaluated to verify the influence on the PFC converter with inductance variation of the MPP core. As a results, it is shown that the ripple of the inductor using a MPP core increase with output power of the converter.
윤강섭(K. S. Yoon),안태영(T. Y. Ahn),이만형(M. H. Lee) 대한전자공학회 1992 대한전자공학회 학술대회 Vol.1992 No.10
In this study, heavy loads driving servo control systems, which are composed of electro-hydraulic servo-valve, hydraulic motor/cylinder, gear box and link mechanism, are investigated for implemention. To predict the performances of the systems, modelling and simulation with some nonlinearities are carried out. Simulation results are compared with experimental results.
주정규(J.K.Ju),안태영(T.Y.Ahn) 전력전자학회 2003 전력전자학술대회 논문집 Vol.2003 No.7(1)
Recently the PDP is the most remarkable media for a next generation display device. In this paper, we proposed the PDP dedicated DC-DC converter using a new soft switching method because the PDP has a lot of power dissipation so we need to develope The proposed converter using one transformer has soft switching and a advantage to lower voltage stress in switch and also is predicted to have high power efficiency. we proposed the principles and theory using the zero voltage switching and verified the validity through a simulation.
소프트 스위칭 방식의 새로운 DC-DC 컨버터에 관한 연구
이봉준(B.J.Lee),안태영(T.Y.Ahn) 전력전자학회 2003 전력전자학술대회 논문집 Vol.2003 No.7(1)
In this paper, we report the experimental results of the novel Soft-Switching DC-DC converter and synchronous rectifier. The experimental converter, that has a output voltage 3.3V, output current 20A, maximum power of 66W, switching frequency of 100kHz and input voltage range of 44-52V, has been successfully implemented As a result, in the entire voltage range the measured full load efficiency was above 90%, and the output voltage was reg~lated at 3.3V within ±3% tolerance