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전공식 콘트롤 밸브 Positioner 용 Magnet Unit의 해석
김성재(S. J. Kim),김지원(J. W. Kim),조순철(S. T. Chung),정선태(S. Jo),유형근(H. -K. Yoo),전찬구(C. -G. Jeon),고택범(T. -B. Koh) 한국자기학회 1997 韓國磁氣學會誌 Vol.7 No.6
We analyzed an important part of control valve, magnet unit, which is used to control the fluid. Magnetic circuit which is composed of magnet and yoke is analyzed using finite element method. Then, flux density and coil force were calculated and compared with those of measured. According to the simulation results, the gap field, force constant, and permeance coefficient were 3~5 kG, 27.5 N/A, 22.1, respectively, which corresponded resonably well with the measured values. We also obtained reluctance factor of 1.1 and fringing factor of 1.4 by simulation.