http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
공간벡터변조에 의한 반송용 편측식 선형유도전동기의 동특성에 관한 연구
우정인,조윤현,조용길,신동률,정영일 동아대학교 공과대학부설 생산기술연구소 1997 生産技術硏究所硏究論文集 Vol.2 No.2
A Single-sided Linear Induction Motor(SLIM) has been developed for use in industrial machines, transportation, application to automations, because it has merits of direct driving and simple structure. The SLIM for conveyer system requires a soft start and stop, and no shock drive. The air gap of SLIM is large and the fluctuation of its distance while being operated has significant effect on the thrust of SLIM and cause the thrust ripple. Mecause of the effect of this thrust ripple, it is difficult to control the speed of SLIM precisely. In order to improve the problems maintenance above, in this paper, the Space Vector Modulation (SVM) with PI controller is proposed, which offers the dynamic characteristics of SLIM without the thrust ripple.
우정인,노태균,신동률,노인배 한국조명전기설비학회 1998 조명·전기설비학회논문지 Vol.12 No.3
In this paper, the thrust control of PWM Inverter-Fed SLIM(Single-sided Linear Induction Motor) is achieved with Space Vector control and PI control. The trembling of air gap length which is occurred between the primary winding core and the secondary structure of the SLIM must be minimized in order to get quick response characteristics. First, the equivalent circuits and voltage equations of SLIM are shown on th suitable d-q axis which analyze characteristics of the thrust and the normal force. Also, modeling and analysis of the equivalent circuits transferred d-q axis are able to make robust transient torque from the current regulation in the equivalent circuit. These results exemplified the direct drive of SLIM with the reference speed and torque were verified by experiments.
二電源法에 의한 스�모우터의 토오크 特性改善에 관한硏究
禹靖仁 동아대학교 공과대학 부설 한국자원개발연구소 1982 硏究報告 Vol.6 No.2
By using the one chip, LSI, Micom PPMC101 Stepping Motor is drived. By means of Dual Supply Method, the rise time of starting current is reduced and stiffness components of T-θ characteristics is improved, and then modified mathematical model of the characteristics of torque and experimental requirements are compared, furthermore, the improvements of stiffness rise up the effective driving torque and then enlarged the slewing torque and starting torque. With the optical Encoder, by comparison of the input-output pulse, the error of vibration and the range of stable drives would be detected.
磁束 制御型 PWM INVERTER에 의한 誘導 電動機의 可變速 制御
禹靖仁,文在星 동아대학교 공과대학 부설 한국자원개발연구소 1987 硏究報告 Vol.11 No.1
This paper attempts driving for minimized riffle torque of three phase Induction motor with optimized switching pattern of Pulsewidth-modulated Inverter by a microcomputer, this pattern is obtained by a new founded 1-m axis on the vector of instantaneous linkage flux locus and dispersive constant of riffle torque that is made from harmonic output currents of PWM Inverter. In this paper, Althogh the actual linkage flux locus is demanded high frequency switching for obeying a ideal limkage flux locus in the PWM Inverter, we find out smoothed variable-speed controlling by the optimized switching pattern on the software of microcomputer(Z-80).
禹靖仁,李浚柝 동아대학교 공과대학 부설 한국자원개발연구소 1982 硏究報告 Vol.6 No.1
Micom is the most powerful and profitable tool for the control of the stepping motor as a small pulse motor. In this paper, it is reported that a series of controll programs, that is, the basic program and the programs for the C. W. and C. C. W. rotations and the limited operations, are developed. And the conclusions through these experiments have been obtained as follows. 1) The drive of the stepping motor is not only excution by Micom pulses, but the finding of the 1 phase, 2phase or 1-2 phase excited output is depended upon the instruction of out port. 2) The sequential control of the exciting phase and the C. W. and C. C. W. rotations of the Rotor through the shifted Accumulator Register inside C P U is excuted easily, and the developements of the control programs and the expansion of the Buffer Memory space make the limited operation and the speed control possible. 3) Ultimately, by the closed loop drive of he stepping motor, when the patterns of the arbitrary selected step accelerations, constant speeds, decelerations and stop are memorized in the Micom Kit, the tracking operation of the open loop drive is possible.
LIAPUNOV函數에 의한 同期電動機의 동기인입현상 解析
우정인,이준탁,윤병도 동아대학교 공과대학 부설 한국자원개발연구소 1987 硏究報告 Vol.11 No.2
A synchronous motor started as an induction motor must be synchronized as soon as possible by the application of field at any point. Unfortunately, the dynamic motion equations, describing the synchronized process, that is, describing the pulling-into-step process, are represented by complicate and nonlinear differential equations which have no analytical techniques. However, practical criteria for predetermining with adquate accuracy whether a given motor will or will not pull into step under specified conditions, must be necessarily given. Futhermore, it is impossible to obtain the accurate solution of the closed form by conventional techniques. Even though they are obtained, they does not show the stable regions over 4 quadrants. Specially, the accurate observations about the continuous variations of slip and load angle are very important for the stablized control of synchronous motor and all systems with them. The abnormal and unstable operations such as hunting pulling out and etc. are fatal to the life of machine itself and all systems with them. Therefore, in this paper, the stable regions in the sense of strictness over 4 quadrants, the analytical and the experimental techniques, for cylindrical synchronous motor are introduced in detail. These techniques used in this paper are based on the construction and analysis of Liapunov function, derived from the Lagrange-Char-pit method which is one of the solution techniques for partial differential equations. The theory of the various stable regions and optimal points for applications of field, which can be predicted the success or the failure of pulling-into-step under the variations of load ratio and damping ratio is presented and also is proved by experimental results.