• Title, Summary, Keyword: Ultrasonic linear motor

Search Result 89, Processing Time 0.029 seconds

Diriving Characteristic of Ll-B4 Type Ultrasonic Linear Motor (L1-B4 초음파 리니어 모터의 동작 특성)

  • Kim, Hang-Sik;Park, Tae-Gone
    • Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
    • /
    • /
    • pp.730-733
    • /
    • 2004
  • An ultrasonic linear motor was composed af a slider and a stator vibrator including piezoelectric material and elastic material. The ultrasonic linear motors mainly consist of an ultrasonic vibrator which generates elliptical oscillations. $L_1-B4$ ultrasonic linear motor use longitudinal and bending multi-vibration. In order to design stators which has high efficiency and diriving characteristics. The finite element method was used to optimize dimension of ultrasonic vibrator and direction of vibratory displacement. stator vibrator of respectively width 3, 5, 7[mm] was fabricated an experimented. as results When width was 5[mm], the driving characteristics was good

  • PDF

Design and Analysis of Ultrasonic Linear Motor Using Multilayer Piezoceramics (적층 압전세라믹을 이용한 초음파 리니어 모터의 설계 및 해석)

  • Kim, Tae-Yoal;Kim, Beam-Jin;Park, Tae-Gone;Kim, Myong-Ho
    • Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
    • /
    • /
    • pp.61-64
    • /
    • 2000
  • An ultrasonic linear motor was composed of a slider and a stator vibrator including piezoelectric material and elastic material. The ultrasonic linear motors mainly consist of an ultrasonic oscillator which generates elliptical oscillations. Elliptical oscillations are generated by synthesizing two degenerated modes. The design of a stator for an ultrasonic linear motor was optimized with respect to vibration mode and direction of vibratory displacement by employing the finite element method. Applying multilayer piezoelectric ceramics. we found larger elliptical oscillations. The motors were designed by varying the width of stator vibrator and the thickness. the length and the position of multilayer piezoelectric ceramics.

  • PDF

Driving Characteristic of Ultrasonic Linear Motor with V-type (V-형 선형 초음파 모터의 구동 특성)

  • Jeong, Seong-Su;Seo, San-Dong;Park, Tae-Gone
    • Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
    • /
    • /
    • pp.274-275
    • /
    • 2006
  • A linear ultrasonic motor was designed by a combination of the longitudinal and bending mode. Linear ultrasonic motors are based on an elliptical motion on the surface of elastic body, such as bar or plates. The corresponding eigen-mode of one resonance frequency can be excited twice at the same time with a phase shift of 90 degrees in space and time. That is excite symmetric and anti-symmetric modes. Then it determines the thrust and speed of the motor. Linear ultrasonic motors are investigated experimentally in according to be fabricated a general classification to motor structure and material characteristic. There was the first to simulate as use of finite element analysis ANSYS 9.0. The AL-T2W8-ARM14-LEG18-ANGLE80 motor has a maxim efficiency 17 [%] under the speed 0.14 [m/s], thrust 345 [gf] and preload 280 [gf], operating frequency is 57.6 [kHz].

  • PDF

Driving Characteristic of Ultrasonic Linear Motor With V-type (V-형 선형 초음파 모터의 구동 특성)

  • Jeong, Seong-Su;Park, Tae-Gone
    • Journal of the Korean Institute of Electrical and Electronic Material Engineers
    • /
    • v.20 no.5
    • /
    • pp.425-429
    • /
    • 2007
  • A linear ultrasonic motor was designed by a combination of the longitudinal and bending mode. linear ultrasonic motors are based on an elliptical motion on the surface of elastic body, such as bar or plates. The corresponding eigen-mode of one resonance frequency can be excited twice at the same time with a phase shift of 90 degrees in space and time. That is excite symmetric and anti-symmetric modes. Then it determines the thrust and speed of the motor. Linear ultrasonic motors are investigated experimentally in according to be fabricated a general classification to motor structure and material characteristic. There was the first to simulate as use of finite element analysis ANSYS 9.0. The AL-T2W8-ARM14-LEG18-ANGLE80 motor has a maxim efficiency 18 % under the speed 0.14 m/s, thrust 345 gf and preload 280 gf, operating frequency is 57.6 kHz.

Development of Ultrasonic Linear Motor using Piezoelectric Ceramics (압전 초음파 선형 모터 개발)

  • Kim, Yeon-Bo;Han, Woo-Seok;Roh, Yong-Rae
    • Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
    • /
    • /
    • pp.279-282
    • /
    • 2000
  • We have been designed and fabricated a bi-directional ultrasonic linear motor using piezoelectric ceramics. With the finite element method, we design and verify validity of the structure, and determine its optimal structure, size of design variables, material and boundary conditions for proper generation of the ultrasonic waves. Based on the design, a prototype of the ultrasonic linear motor has been fabricated and characterized, which thereby proves practical applicability of this new motor.

  • PDF

Linear Ultrasonic Motor by Bimorph (Bimorph 형 선형 초음파 모터)

  • Seo, San-Dong;Park, Tae-Gon
    • Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
    • /
    • /
    • pp.404-407
    • /
    • 2004
  • Linear ultrasonic motor by bimorph. Transducer for linear ultrasonic motor with symmetric and anti-symmetric modes was studied. The transducer was composed of two piezoelectric ceramic that cross at right angles with each other at tip. In order to exist length vibration mode two piezoelectric ceramics must have 90-degree phase difference with each other. As a result, tip of transducer moves in elliptical motion. Elliptical trajectory of transducer was analyzed by employing the (mite element method(FEM). From the result, the linear ultrasonic motor was measured for characteristics. In this paper, vibration shape of transducer was simulated and the resonant frequency, stabilization frequency and maximum displacement were calculated using the FEA.

  • PDF

A Study on The Driving Characteristics of Ultrasonic Linear Motor Using Symmetric And Anti-Symmetirc Resonance Modes (대칭-비대칭 공진모드를 이용한 초음파 리니어 모터의 구동특성 연구)

  • Choi, Myeong-Il;Bae, Seok-Myeong;Park, Tae-Gone
    • The Transactions of The Korean Institute of Electrical Engineers
    • /
    • v.56 no.11
    • /
    • pp.1962-1966
    • /
    • 2007
  • 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 resonance 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.

Finite Element Simulation of Multilayer Ultrasonic Linear Motor (적층 선형 초음파 모터의 유한요소 시뮬레이션)

  • Lee, Sang-Ho;Lee, Gab-Soo;Yoo, Ju-Hyun;Hong, Jae-Il;Jeong, Young-Ho
    • Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
    • /
    • /
    • pp.284-285
    • /
    • 2006
  • In this study, multilayer structured ultrasonic linear motor was designed and simulated using ANSYS of finite element method simulator for investigating the optimum conditions of it. The ultrasonic linear motor studied in this paper designed using the 1st longitudinal($L_1$) and 4th bending vibration($B_4$). The driving voltage of the motor was very low as $V_1=5\sqrt{2}sinwt$ and $V_2=5\sqrt{2}coswt$. With the increase of the number of piezoelectric ceramic layers, displacement of node was increased. Maximum z displacement of node was about $12{\mu}m$ at the 18 layered ultrasonic motor.

  • PDF

Comparison of Characteristics between $L_1-B_4$ mode and $L_1-B_8$ mode Ultrasonic Motors ($L_1-B_4$모드와 $L_1-B_8$모드 초음파 선형 전동기의 특성 비교)

  • U, Sang-Ho;Kim, Dong-Yeon;Kim, Jin-Soo
    • Proceedings of the KIEE Conference
    • /
    • /
    • pp.1518-1520
    • /
    • 2002
  • Purpose of this research compares best transfer speed about applied frequency and voltage using characteristic of $L_1-B_4$ mode and $L_1-B_8$ mode linear ultrasonic motor that use piezoelectric effect. By method of study, analyzed best transfer speed measuring and comparison load status that use actuality telephone card in $L_1-B_4$ mode linear ultrasonic motor and no-load status of $L_1-B_8$ mode linear ultrasonic motor. Experiment result is applied frequency(58.4Hz) in $L_1-B_4$ mode linear ultrasonic motor (load state) and the best transfer speed by 19.8[cm/s] at applied voltage(56V) point. Also, $L_1-B_8$ mode linear ultrasonic motor (no-load state) is best transfer speed by applied frequency(27.9kHz) and 32.96[cm/s] at applied voltage (50V) point.

  • PDF

Piezoelectric ultrasonic linear motor by traveling wave (Traveling wave를 이용한 압전 선형 초음파 모터)

  • Yoon, Jang-Ho;Lee, Won-Hee;Choi, Woo-Chun;Kang, Chong-Yun;Yoon, Seok-Jin
    • Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
    • /
    • /
    • pp.192-192
    • /
    • 2008
  • This paper represents a piezoelectric ultrasonic linear motor by traveling wave. The motor which is composed of two piezo ceramics, elastic body, and connecting tip is driven by the frictional force between the connecting tip and the linear motion guide. longitudinal and flexural vibrations are made by traveling wave which is generated when the ultrasonic electrical signals with 90 degree phase difference are applied to two ceramics. These vibrations contribute to elliptical motion by mixed mode between longitudinal and transverse mode. A linear movement can be easily obtained by using the elliptical motion. In this paper, the piezoelectric actuator has been intensively simulated by using ATILA to achieve an optimized elliptical motion of it. We could get the elliptical motion from actual experiment through the simulated result.

  • PDF