• Title, Summary, Keyword: Ultrasonic linear motor

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Design and FEM Analysis of Ultrasonic Linear Motor (초음파리니어 모터의 설계 및 해석)

  • Kim, Hang-Sik;Park, Tae-Gone
    • Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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    • pp.728-731
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    • 2003
  • This paper deals with a flat type ultrasonic motor, which uses a longitudinal-bending multi mode vibrator of rectangular form. A linear ultrasonic motor was designed by combination of the first longitudinal and eighth bending mode, and the motor consisted of a straight aluminum alloy bar bonded with piezoelectric ceramic elements as a driving element. The geometrical dimensions of the rectangular aluminum vibrator were determined by Euler-Bernoulli theory ANSYS was used to analyze the resonance frequency and the displacement of the stator vibrator. The resonance frequency of the motor provides the elliptical motion. and ANSYS was used to analyze elliptical motion and elliptical trajectory of stator vibrator when thickness of piezoelectric ceramics was varied respectively 0.763, 1.526, 2.289[mm] and width of stator vibrator was varied respectively 16, 12, 8, 4[mm]. When thickness of piezoelectric ceramics was decreased, the displacement of the stator vibrator was increased. And when width of stator vibrator was decreased, the displacement of the stator vibrator was increased.

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Design and Fabrication of Linear-Type Ultrasonic Motor using Ll-B4 Vibration Mode (Ll-B4 진동모드를 이용한 linear-Type Ultrasonic Motor의 설계 및 시작)

  • 이종섭;임기조;정수현;정중기;임태빈
    • Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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    • pp.29-32
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    • 1998
  • A plate-type ultrasonic linear motor using longitudinal and bending multi-vibration mode was designed and fabricated for card-forwarding device. The rotor consisted of piezoelectric ceramic plate and elastic materials. The performances of the motor were measured. As the experimental results, no-load speed of the motor was 0.6 m/s at 80 V in applied voltage. Starting torque was 1.4 mNm and maximum efficiency was 1.2 %.

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Design and FEA of Ultrasonic Linear Motor Using Two Langevin Piezoelectirc Vibrator (2개의 란쥬반형 압전 진동자를 이용한 초음파 리니어 모터의 설계와 유한요소해석)

  • 최명일;박태곤;정현호;이재형;정영호
    • Journal of the Korean Institute of Electrical and Electronic Material Engineers
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    • v.16 no.8
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    • pp.669-675
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    • 2003
  • Transducer for ultrasonic linear motor with symmetric and anti- symmetric modes was studied. The ultrasonic linear motor consists of two Langevin type piezoelectric vibrators that cross at right angles with each other in tip. In order to excite symmetric and anti-symmetric modes, the transducer must have a phase shift of 90 degree in space and time. As a result, the tip of transducer moves on an elliptical motion. In this paper, the finite element analysis was used to optimize dimension and displacement of the transducer.

Design and Finite Element Analysis of an Ultrasonic Motor. (초음파 모터의 설계와 유한요소해석)

  • Lee, Seok-Hee;Lee, Chang-Hwan;Jung, Hyun-Kyo;Lee, Jung-Kun;Hong, Kug-Sun
    • Proceedings of the KIEE Conference
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    • pp.79-81
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    • 1998
  • This paper presents analytic and numerical analysis of ultrasonic motor, specially linear motion ultrasonic machine. For rough estimation of characteristics of linear ultrasonic motor, the analytic method is used and a three-dimensional numerical analysis with experimental material data using ABAQUS, is performed. The validity of analysis is confirmed by comparing experimental results with numerical ones.

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A Study on the Characteristics of Ultrasonic Linear Motor Using Piezoelectirc Ceramics (압전세라믹을 이용한 초음파 리니어 모터의 특성연구)

  • Choi, Myeong-Il;Jeong, Dong-Seok;Chong, Hyon-Ho;Lee, Jae-Hyung;Park, Tae-Gone
    • Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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    • pp.664-668
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    • 2003
  • Transducer for ultrasonic linear motor with the symmetric and anti-symmetric modes was studied. The ultrasonic linear motor consists of two Langevin type piezoelectric vibrators that cross at right angles with each other in tip. In order to excite symmetric and anti-symmetric modes, the transducer must have a phase shift of 90 degree in space and time. Therefore, the tip of transducer moves on an elliptical motion. In this paper, the finite element analysis was used to optimize dimension and displacement of the transducer. The ultrasonic motor was fabricated using the simulated result and the driving characteristics were measured. No-load velocity was 0.28[m/s] and the maximum efficiency was 30[%] in resonance frequency.

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Design of a optimum structure for Ultrasonic Linear Motor using a travelling wave (진행파를 이용한 직선형 초음파 모터의 최적구조 설계)

  • 김연보;한우석;노용래
    • Journal of the Korean Institute of Electrical and Electronic Material Engineers
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    • v.13 no.4
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    • pp.280-285
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    • 2000
  • The conventional ultrasonic linear motors developed so far utilize a standing wave and are of a pi-type or a hybrid transducer type structure. Traveling wave type bi-direction linear motors have not been developed yet. This paper describes design of a new bi-directional ultrasonic linear motor working by means of a traveling wave. With the finite element method we design and verify validity of the new structure. And we determine its optimal structure size of design variables material and boundary conditions for proper generation of the traveling wave.

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A High power and Precision Ultrasonic Linear Motor with Multi-support Mechanism (다점 지지 고출력 고정도 초음파 모터)

  • Lee S.K.;Yun C.H.;Lee J.Y.;Cha H.R.;Kim W.K.;Kang J.S.
    • Proceedings of the Korean Society of Precision Engineering Conference
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    • pp.151-152
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    • 2006
  • Nowadays, great attention has been shown to the question of ultrasonic linear motor for accomplishing the high positioning accuracy and high driving force in the semiconductor and optical industry. Ultrasonic linear motors have many advantages such as simple structure, quick response, ability to maintain position without energy consumption, and electromagnetic effect. And BLT has attracted attention to accomplish large vibration amplitude and large mechanical force. Authors designed and developed the new type of ultra sonic linear motor with multi support mechanism, achieved 75N of output force and 0.45m/s of velocity.

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Design and Analysis of Linear Ultrasonic Motor Using two Langevin Type Transducer (2개의 Langevin 진동자를 이용한 선형 초음파 모터의 설계와 해석)

  • Seo, San-Dong;Park, Tae-Gone
    • Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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    • pp.187-190
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    • 2004
  • Transducer for ultrasonic linear motor with the symmetric and anti-symmetric modes was studied. The ultrasonic liner motor consists of two Lngevin type piezoelectric vibrators that cross at right angles with each other in tip. In order to excite symmetric and anti-symmetric mode, the transducer must have a 90 degree phase difference of voltage. Therefore, the tip of transducer moves on an elliptical motion. In this paper, the finite element analysis was used. The ultrasonic motor was fabricated using the simulated result and the driving characteristics were measured.

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A Study on the Characteristics of Linear Ultrasonic Motor Using Langevin type Piezoelectic Transducer (란쥬반형 압전 진동자를 이용한 선형 초음파 모터의 특성연구)

  • Choi, Myeong-Il;Park, Tae-Gone;Kim, Myeong-Ho
    • Proceedings of the KIEE Conference
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    • pp.137-139
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    • 2003
  • Transducer for ultrasonic linear motor with the symmetric and anti-symmetric modes was studied. The ultrasonic linear motor consists of two Langevin type piezoelectric vibrators that cross at right angles with each other in tip. In order to excite symmetric and anti-symmetric modes, the transducer must have a phase shift of 90 degree in space and time. Therefore, the tip of transducer moves on an elliptical motion. In this paper, the finite element analysis was used to optimize dimension and displacement of the transducer The ultrasonic motor was fabricated using the simulated result and the driving characteristics were measured. No-load velocity was 0.28[m/s] and the maximum efficiency was 30[%] in resonance frequency.

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A Characteristic of Linear Ultrasonic Motor using Langevin Type Transducer (Langevin 진동자를 이용한 선형 초음파 모터의 특성)

  • Seo, San-Dong;Park, Tae-Gone
    • Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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    • pp.627-630
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    • 2004
  • Transducer for linear ultrasonic motor with symmetric and anil anti-symmetric modes was studied. The transducer was composed of two Langevin-type vibrators that cross at right angles with each other at tip. In order to excite two vibration modes, two Langevin-type vibrators must have 90-degree phase difference with each other. As a result, tip of transducers moves in elliptical motion. Elliptical trajectoric of transducer was analyzed by employing the finite element method. From these results, the ultrasonic motor was fabricated and was measured for characteristics. In this paper compared an ANSYS analysis with an experiment results. The no-road maximum speed was 113.1[cm/s].

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