• Title/Summary/Keyword: Linear force motor

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An Experimental Study on Static Test of Linear Induction Motor(I) (선형유도전동기의 정특성에 대한 실험적 연구(I))

  • Kim, B.S.;Jeong, H.K.;Park, Y.T.;Lee, H.G.;Jang, S.M.
    • Proceedings of the KIEE Conference
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    • 1996.07a
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    • pp.18-21
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    • 1996
  • This paper deals with experimentation on static test of linear induction motor for the propulsion system of UTM(Urban Transit Maglev). It is very important that vertical force zero effects to levitation field of maglev. Because it is continuous for air gap 11mm of levitated maglev vehicle. Then we found the slip frequency that the vertical force zero due to it is variable. Thus we had compared between simulation value and experiment value for lim by static test Jig.

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A Passive Reaction Force Compensation Mechanism for a Linear Motor Motion Stage using an Additional Movable Mass (추가 이동 질량을 이용한 선형 모터용 반발력 보상 기구)

  • Nguyen, DucCanh;Ahn, HyeongJoon
    • Journal of the Korean Society for Precision Engineering
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    • v.31 no.10
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    • pp.929-934
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    • 2014
  • Reaction force compensation (RFC) mechanism can relieve the vibration of base system caused by acceleration and deceleration of mover. In this paper, we propose a new passive RFC mechanism with a movable additional mass to reduce vibration of the system base as well as displacement of the magnet track. First, equation of motion for the new passive RFC mechanism is derived and simulated to tune design parameters such as masses and spring coefficients. Simulation results show that the vibration of the system base of the stage with the new RFC mechanism.

The Characteristic Analysis of a Single-Sided Linear Induction Motor due to the Lateral Displacement of the Primary and the Secondary by the F.E.M. (유한 요소법에 의한 편측식 선형유도전동기의 1차측과 2차측의 횡방향 편위에 따른 특성해석)

  • 임달호;최창규;조철직;조윤현
    • The Transactions of the Korean Institute of Electrical Engineers
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    • v.39 no.8
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    • pp.820-827
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    • 1990
  • For the purpose of investigation the thrust force, the lateral force, and the eddy current loss when the primary and the secondary of a single-sided linear induction motor is displaced in the space, this paper proposes an analysis technique for the characteristics of the eddy current induced on the secondary and the magnetic flux density distribution in the y-z plane by F.E.M. To verify the effectiveness of this analysis technique, the starting-thrust force due to a lateral displacement is compared to the experimental data.

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Design of Linear Switched Reluctance Motor considering to Normal Force (수직력을 고려한 리니어 스위치드 릴럭턴스 전동기의 설계)

  • Jang, Seok-Myeong;Park, Ji-Hoon;Ko, Kyoung-Jin;Sung, Ho-Kyung;Sung, So-Young
    • Proceedings of the KIEE Conference
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    • 2008.10c
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    • pp.59-61
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    • 2008
  • This paper deals with design of Linear Switched Reluctance Motor (LSRM) considering to normal force. First, we derived design factor from pole arc ratio of stator and mover, and calculated time constant using inductance and resistance. Second, we decided design parameter from design factor using time constant, and analyze characteristics for LSRM using finite element analysis. Finally, we analyzed force characteristic according to design factor.

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Design and Analysis of Linear Motor for Medical Appliance Pump (의료용 펌프의 리니어 모터 설계 및 해석)

  • Kim, Dong-Soo;Lee, Won-Hee;Park, Jae-Bum
    • Proceedings of the KIEE Conference
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    • 2002.07d
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    • pp.2683-2686
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    • 2002
  • In this paper, it has been investigated that the design and simulation of linear motor for medical appliances. Vacuum pump consists of unified plunger and piston part, coils, inlet valve and outlet valve. Operating principal of vacuum pump show that air is to flow to go inside through the inlet valve, when the magnetic force (16N) is exerted, whereas, air is to flow to go outside through outlet valve, when spring force (14.8N) is exerted. The results of simulation, it was turned out that magnetic force was loaded with 16 Newton, displacement of actuator was about 8mm.

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Regenerative Braking Characteristics of Linear induction Motor for MAGLEV (자기부상열차용 선형유도전동기의 회생 제동 특성 해석)

  • Park, Seung-Chan;Lee, Won-Min;Kim, Jung-Cheol;Park, Yeong-Ho
    • Proceedings of the KSR Conference
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    • 2008.06a
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    • pp.1866-1870
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    • 2008
  • In this paper, electric braking performances of linear induction motor(LIM) designed for propelling the MAGLEV are presented. Regenerative braking is carried out from 110km/h to 20km/h, and plugging which converts the direction of travelling magnetic field is carried out in the low speed region below 20km/h. It is important to reduce attractive force which can affect the magnetic levitation load during regenerative braking or plugging operation mode. So in this paper the braking performances are analyzed by finite element method. As a result, braking force, attractive force, phase current, voltage to frequency patterns and its magnetic fields of braking LIM are presented.

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The Detent Force Analysis of Permanent Magnet Linear Synchronous Motor according to the skew (영구자석형 선형 동기전동기의 skew에 따른 디텐트력 특성해석)

  • Jang, Seok-Myeong;Yoon, Gi-Gab;Seo, Jung-Chul;Kim, Sang-Joon;Jung, Won-Wook
    • Proceedings of the KIEE Conference
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    • 2005.10c
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    • pp.132-134
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    • 2005
  • The severe problem in improving the positioning precision of a permanent linear synchronous motor(PMLSM) is the large detent force caused by the PM. It is generally an undesired effect that contributes to the torque ripple, vibration and noise of machine. In this paper, the method to reduce detent force according to the mover skew is studied and analyzed using the analytical method. The analytical results are validated by finite clement analyses.

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The Analysis Methods for the Design of Magnetic Circuits in Linear Pulse Motors (LPM의 자기회로 설계를 위한 해석 방법)

  • Lee, Eun-Woong;Kim, Il-Jung
    • Proceedings of the KIEE Conference
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    • 1990.11a
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    • pp.32-36
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    • 1990
  • LPM is a characterized motor to reciprocate linear motion for the office automation(OA), the factory automation(FA) and the field of information instruments because it can generate direct drive without any mechanical converter. For the design and analysis of permanent magnet type linear, pulse motor, it is therefore necessary to investigate the characteristics of magnetic flux distribution, static and dynamic thrust force, normal force, etc, by analyzing its magnetic circuit. This paper describes various useful methods for improving the characteristics of LPM. And these method is adopted on the PM and flat type, double side 2-phase 8-pole LPM.

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A Development of dynamic characteristics measuring system and linearization control method for Linear Pulse Motor (LPM의 동추력특성측정 및 선형화 제어기법 개발)

  • Kim, Moon-Hwan;Lee, Nam-Ki;Kim, Kook-Hun
    • Proceedings of the KIEE Conference
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    • 1997.07f
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    • pp.2146-2148
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    • 1997
  • We had developed a prototype Linear Pulse Motor(LPM) for the linear motion actuator. In this paper, it is mentioned a new dynamic equations which is considered the nonlinearity of the thrust force of LPM. And a measuring method of ripples in the thrust forces is proposed and the ripples were measured in the laboratory. In the experimental results, it is shown the validity of the proposed measuring method for catching of the ripple values and waveforms in the thrust force.

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A Study on the Thrust and Normal force Characteristics by Tooth Shapes of HLSM (HLSM의 치 형상에 따른 추력 및 수직력 특성에 관한 연구)

  • 이상호;오홍석
    • The Transactions of the Korean Institute of Electrical Engineers B
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    • v.53 no.5
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    • pp.318-324
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    • 2004
  • In the recently, the necessity of linear position control motors have been increased in the various fields of the automatic control system. In this paper, we have designed the tooth models of the hybrid type linear stepping motor(HLSM); rectangular type(RT), triangle type(TrT), round type(RdT) and wedge type(WT), and proposed the optimum tooth shape of the HLSM by simulating(Flux2D) the thrust and normal force characteristics with the finite element method(FEM) and the virtual work method. And we have manufactured the prototype HLSM with the optimum tooth, and measured the various values by using experimental system. Thus, we have confirmed the justice of theory because the computed and the experimental results almost coincide with.