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박수종(S J Park),정한진(H J Jung),장민영(M Y Jang),정태화(T H Jung),권영안(Y A Kwon) 대한전기학회 2006 대한전기학회 학술대회 논문집 Vol.2006 No.4
Speed and torque controls of permanent magnet synchronous motors are usually attained by the application of position and speed sensors. However, speed and position sensors require the additional mounting space, reduce the reliability in harsh environments and increase the cost of a motor. Therefore, many studies have been performed for the elimination of speed and position sensors. This paper investigates a novel sensorless control of a permanent magnet synchronous motor. The proposed control strategy utilizes the active and reactive torque control for maximizing the active torque of a sensorless PMSM. The proposed algorithm is verified through the simulation and experimentation.
이대희,양형석,남욱원,이성호,진호,김동락,박수종,김병혁,박성제,Lee, D.H.,Yang, H.S.,Nam, U.W.,Lee, S.,Jin, H.,Kim, D.L.,Pak, S.,Kim, B.H.,Park, S.J. 한국천문학회 2006 天文學論叢 Vol.21 No.2
We have tested the performance of the Proto-model of Space Infrared Cryogenic System (PSICS), which is a small infrared camera, developed by Korea Astronomy and Space science Institute (KASI), Korea Basic Science Institute (KBSI), Korea Institute of Machinery and Materials (KIMM), and i3system co., as a cooperation project. The purpose of PSICS is to ensure a technology of small infrared cryogenic system for future development of space infrared (IR) cameras. PSICS consists of cryogenic part, IR sensor and electronics part, and optical part. The performance test of each part and the integrated system has been completed successfully. PSICS will be used as a guiding camera for ground-based IR telescopes and a test system for developing a space-borne instrument.