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SVC계통의 안정도 향상을 위한 파라미터 자기조정 퍼지제어기의 설계
주석민(Seok-Min Joo) 한국조명·전기설비학회 2009 조명·전기설비학회논문지 Vol.23 No.2
본 논문에서는 전력계통의 안정도를 향상시키기 위하여 동기 발전기와 정지형 무효전력 보상기에 대한 파라미터 자기조정 퍼지제어기의 설계 기법을 제시한다. 제안된 퍼지제어기의 파라미터 자기조정 알고리즘은 퍼지제어기의 추론값과 전력계통안정화 장치의 출력값들 사이의 오차를 감소시키는 두 개의 방향 벡터를 사용하는 최급강하법에 기초를 둔다. 전력계통안정화 장치로부터 얻어진 입ㆍ출력 데이터쌍을 사용하여, 퍼지추론 규칙의 전건부와 후건부에서의 파라미터들은 제안된 최급강하법에 의해 자동조정되고 학습되어진다. 시뮬레이션 결과, 제안된 퍼지제어기가 종래의 제어기보다 우수한 제어성능을 보임을 확인하였다. In this paper, it is suggested that the selection method of parameter of Power System Stabilizer(PSS) with robustness in low frequency oscillation for Static VAR Compensator(SVC) using a self tuning fuzzy controller for a synchronous generator excitation and SVC system The proposed parameter self tuning algorithm of fuzzy controller is based on the steepest decent method using two direction vectors which make error between inference values of fuzzy controller and output values of the specially selected PSS reduce steepestly. Using input-output data pair obtained from PSS, the parameters in antecedent part and in consequent part of fuzzy inference rules are learned and tuned automatically using the proposed steepest decent method.
이수호,김해재,주석민,Lee, Su-Ho,Kim, Hai-Jai,Joo, Seok-Min The Korean Institute of Electrical Engineers 2018 전기학회논문지 P Vol.67 No.3
We consider the system is subject to the linearly polarized oscillatory external field. We study the optical quantum transition Line shapes(QTLS) which show the absorption power and the quantum transition line widths(QTLW) of electron-piezoelectric phonon interacting system. We analyze the magnetic field dependence of the QTLS and the QTLW in various cases. In order to analysis the quantum transition, we compare the magnetic field dependence of the QTLW and the QTLS of two transition process, the intra-Landau level transition process and the inter-Landau level transition process.
Immune Algorithm을 이용한 AGV 적응제어를 위한 동정에 관한 연구
이진우(Jin-Woo Lee),주석민(Seok-Min Joo) 대한전기학회 2015 대한전기학회 학술대회 논문집 Vol.2015 No.10
In this paper, we described a method of dynamical system identification and its control parameter tuning based on artificial immune system in AGV(autonomous guided vehicle) that has four wheel steering system in the port. The immune system not only can easily adapt itself to the variation of environment and various disturbances, but also has abilities of learning and recognition using associative memory cells. The proposed method was composed of model identifier(emulator) and controller tuner respectively based on HIR(humoral immune response) and CMR(cell-mediated response) in the biological immune system. For suddenly local system fault, this example was states of fixed front or rear wheels, we performed the simulation to choice system parameters and tune controller gains using the proposed HIR model emulator and CMR tuner.
이수호,김영문,김해재,주석민,Lee, Su-Ho,Kim, Young-Mun,Kim, Hai-Jai,Joo, Seok-Min The Korean Institute of Electrical Engineers 2017 전기학회논문지 P Vol.66 No.3
We investigated theoretically the quantum optical transition properties of Si, in quasi 2-Dimensinal Landau splitting system, based on quantum transport theory. We apply the quantum transport theory (QTR) to the system in the confinement of electrons by square well confinement potential under linearly polarized oscillating field. We use the projected Liouville equation method with Equilibrium Average Projection Scheme (EAPS). In order to analyze the quantum transition, we compare the temperature and the magnetic field dependencies of the QTLW and the QTLS on four transition processes, namely, the intra-leval transition process, the inter-leval transition process, the phonon emission transition process and the phonon absorption transition process.