• Title/Summary/Keyword: 가동철심

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Characteristics Analysis of Moving flat core LOA (평판 철심 가동형 왕복운동 엑튜에이터의 특성해석)

  • Jang, S.M.;Park, N.H.;Jeong, S.S.
    • Proceedings of the KIEE Conference
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    • 2001.07b
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    • pp.742-744
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    • 2001
  • Moving flat core LOA consists of iron flat core as a mover and electric magnet as a stator and operated by electromagnetic force between mover and stator. In a moving flat core type, it takes advantage of doing not have to be equipped with power supply device, having a lower manufacturing cost. But it has a lower linearity and precision. In this paper, a static characteristics of LOA were studied and analyzed using FEA. Experiments, electromagnetic force and inductance according to air gap and input currents, were carried by exciting coil. And we compared these results one another.

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Characteristics of a Flat Moving Core Type LOA due to Static Field Excitation Method (가동철심형 왕복운동용 리니어 모터의 정추력 및 정자계 여자방식에 따른 특성)

  • Jang, S.M.;Jeong, J.M.;Lee, S.L.;Yang, H.S
    • Proceedings of the KIEE Conference
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    • 1999.07a
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    • pp.105-107
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    • 1999
  • This paper presents results of FEA and tests on the characteristics of moving coil type LOA due to the static field excitation method. In case the static field is generated by NdFeB permanent magnet, the static thrust is almost 6 times than that by electromagnet. Therefore under the same power, the volume becomes small according to using permanent magnet for the generation of static field.

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Analysis of Dynamic Characteristic of Flat Moving Core Type LOA (평판 가동철심형 LOA의 동특성해석)

  • Jang, S.M.;Kim, H.G.;Seo, J.H.;Jeong, S.S.;Park, H.C.;Moon, S.J.;Chung, J.A.;Park, C.I.;Chung, T.Y.
    • Proceedings of the KIEE Conference
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    • 1996.11a
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    • pp.15-18
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    • 1996
  • In the case of need for reciprocating motion, the study for application of Linear Oscillating Actuator(LOA) is being accomplished. LOA is the simpler and more efficient than other linear apparatus using the rotary motor because LOA produce the thrust force without any converter such as cam, clutch, rack, pinion and belt, etc. We designed the flat moving core type LOA and manufactured for trial. This paper shows the structure and dynamic characteristics of LOA.

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Characteristic Analysis and Static Tests of a Flat Moving Core Type LOA (평판 철심가동형 LOA의 특성해석 및 정특성 시험)

  • Jang, S.M.;Jeong, S.S.;Jeong, J.M.;Kim, H.K.;Wu, J.S.
    • Proceedings of the KIEE Conference
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    • 1998.11a
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    • pp.52-54
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    • 1998
  • LOA is the linear electromechanical device that mover is similar to secondary conductor of LIM. The mover reciprocates along stroke by supplying the alternating current to primary coil. LOA is the simpler and more efficient than other linear apparatus using the rotary motor because LOA produce the thrust force without any mechanical converter such as cam, clutch, belt, rack and pinion, etc. This paper deals with the static characteristics of moving coil type LOA by virtual work method, FEM analysis and experiment Results show that thrust force increases when mover travels form center to both ends.

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Study on Magnetic Property for Test Coil and Permanent Magnet (Test Coil과 영구자석의 자기 특성 연구)

  • Park, Yun Bum;Kim, Jong Wook;Lee, Jae Seon
    • Journal of the Korean Magnetics Society
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    • v.26 no.5
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    • pp.154-158
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    • 2016
  • A CRDM (Control Rod Drive Mechanism) is an electromagnetic device which drives a control rod assembly linearly to regulate the reactivity of a nuclear core. An RPIS (Rod Position Indication System) is used as a position indicator for a control rod assembly of a CRDM of SMART, and an RPIS consists of permanent magnets and reed switches. SMART is designed for the maximum coolant temperature of $350^{\circ}C$, and the permanent magnets are installed inside of the reactor. The reed switches and electrical circuit are installed outside of the reactor on the other hand. Test coil for a reed switch is test equipment for quality verification of a reed switch, and a test coil consists of a coil and core. In this study, magnetic property of test coil and permanent magnet on a reed switch is compared by using finite element electromagnetic simulation.

Characteristics Analysis of Double Side Excitation Type Multi-separated LDM (양측 여자형 다분할 LDM의 특성해석)

  • Yoon, Shin-Yong;Baek, Soo-Hyun;Kim, Yong
    • Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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    • v.16 no.4
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    • pp.64-72
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    • 2002
  • The use of linear DC motor is spreaded according to industrial development. This study was objected to study the analysis of double side excitation LDM with moving magnet type. In this LDM structure, the mover made use of permanent magnet with six pieces so as to large thrust, the stator was bedded for the multi separated type winding to repress the i개n saturation. Also, double side excitation winding is suppressed to thrust ripple with stratification to zigzag type and designed to production for static thrust. Then it is important to ratio of permanent magnet to winding width at multi separate, this paper analyzed to separate to three pieces of 1:1, 1:0.84 and 1:0.5 with width ratio. The analysis method calculated the parameter useful for permeance and magnetic resistance more than FEM of complicated numerical value analysis. Through manufactured experiment system, measurement result of thrust was almost acquired to constant thrust for all displacement.

Analysis of Thrust Characteristics of Multi-winding LDM (다권선형 LDM의 추력특성 해석)

  • Maeng, In-Jae;Baek, Soo-Hyun;Kim, Yong;Yoon, Shin-Yong
    • Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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    • v.14 no.4
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    • pp.57-64
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    • 2000
  • In this paper, to achieve the constant thrust force of the double side moving-magnet type LDM, the new armature winding of the LDM was proposed so as to restrain the saturation of the center yoke without increasing the mass of LDM. According to analyzing the magnetic flux distribution throughout the air-gap of the LDM, the magnet and winding width (1:0.84) was determined. The 2D finite element analysis was performed for force analysis on air-gap.

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Driving Characteristics Improvement according to the Position Feedback Control of Slotless Linear Synchronous Motor for Living Application (주거 환경 적용을 위한 Slotless 선형 동기전동기의 위치 피드백 제어에 따른 구동 특성 개선)

  • Cho, Kyoung-Pil;Kim, Yong-Jae
    • The Journal of the Korea institute of electronic communication sciences
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    • v.8 no.2
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    • pp.285-290
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    • 2013
  • The slotless linear synchronous motor(LSM) has the advantages that the structure of the mover is simple and it can control the trust force ripple by make the magnetic energy in a gap uniform by removing a slot of the primary iron core. Also, the application of the transportation system is becoming expansion because it high efficiency drive is possible and compares with the other LSM as control is more excellent. However, the application of the living field was unsatisfactory. Therefore, in this study, we examined the drive characteristics by the position feedback control for the living field application of the slotless LSM and we prove useful of the controller through load loading and the acceleration changing to get minimization of the speed vibration and stable answer characteristics.