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배규영,박진우,김창현,한형석 제어로봇시스템학회 2011 제어로봇시스템학회 국내학술대회 논문집 Vol.2011 No.5
In this paper, fuzzy gain scheduling with Kalman filter is proposed to levitate a magnetic levitation conveyor. Magnetic levitation conveyor systems are gaining much attention in display industries, because of their non-contact support, no friction, low noise, and low vibration. In order to maintain the air gap constantly and suppress the vibration, the stable levitation controller is needed. Howevcr, the magnetic levitation system shows nonlinear dynamic behaviors and electrical sensors always suffer from unwanted noise. Fuzzy gain scheduling is used to deal with the nonlinearity. And, the Kalman filter is constructed to estimate the acceleration and gap height accurately. Simulation results demonstrate that proposed controller gives better control performance compared to the conventional PIO controllers, especially in the noisy environment.
반응 표면법을 이용한 자기부상 반송장치의 PID 이득값 조정
배규영(Kyuyoung Bae),김창현(Chang-Hyun Kim),김봉섭(Bong-Seup Kim) 한국철도학회 2011 한국철도학회 학술발표대회논문집 Vol.2011 No.10
A proportional integral derivative (PID) controller is designed and applied to a magnetic levitation conveyor system to control the levitation gap length of the electromagnet constantly. The PID gain parameters are optimized by response surface methods (RSM). The controller is verified with the state-space model of electromagnetic suspension by MATLAB/SIMULINK program. And the controller and the state-space model are also verified experimentally. Simulation and experimental results shows the effectiveness of the PID gain tuning by RSM as compared with the classical PID tuning..
비정질 실리콘 박막 태양전지 효율 향상을 위한 양극산화 알루미늄 템플레이트을 이용한 플라즈모닉 금 나노점 배열 최적화
배규영 ( Kyu Young Bae ),김경식 ( Kyoung Sik Kim ) 정보저장시스템학회 2013 정보저장시스템학회논문집 Vol.9 No.2
The fabrication method of plasmonic nanodots on silicon substrate has been developed to improve the efficiency of thin film solar cells. Nanoscale metallic nanodots arrays are fabricated by anodic aluminum oxide (AAO) template mask which can have different structural parameters by varying anodization conditions. In this paper, the structural parameters of gold nanodots, which can be controlled by the diverse structures of AAO template mask, are investigated to enhance the optical properties of a-Si thin film solar cells. It is found that optical properties of the thin film solar cells are improved by finding optimization values of the structural parameters of the gold nanodot array.