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中国电机工程学报 2007, 27(18) 30-34 DOI:
ISSN: 0258-8013 CN: 11-2107/TM |
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| 电机电工 |
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一种基于纵弯夹心式换能器的直线超声电机 |
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石胜君 陈维山 刘军考 赵学涛 |
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哈尔滨工业大学机电工程学院 哈尔滨工业大学机电工程学院 哈尔滨工业大学机电工程学院 哈尔滨工业大学机电工程学院 |
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摘要：
该电机利用夹心式换能器激励纵向和弯曲振动，通过一定相位差，在驱动足上形成椭圆振动轨迹。采用了指数形变幅杆放大纵振振幅以提高电机速度。利用经典换能器变幅杆理论确定换能器和变幅杆尺寸和纵向谐振频率，并辅以有限元方法来简并纵向和弯曲振动频率。驱动足处于变幅杆不同位置时驱动椭圆振动轨迹有所不同。用有限元法研究了不同形态的椭圆振动轨迹对电机输出性能的影响，发现当驱动足位于弯曲驻波波腹处电机性能最稳定。样机的最大速度480mm/s，最大推力25N。 |
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关键词：
直线超声电机
夹心换能器
指数形变幅杆
有限元法
椭圆轨迹
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Ultrasonic Linear Motor Using Longitudinal and Bending Multimode Bolt-clamped Langevin Type Transducer |
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Abstract:
The proposed motor forms elliptical trajectories on driving tips by exciting longitudinal and bending vibration of a double mode Langevin type transducer with input phase difference. Exponential shape transducer horn is adopted to achieve high linear speed. Classical theory of transducer horn is used to determine transducer's longitudinal resonance frequency and configuration dimensions. Combined with FEM design method, the longitudinal and bending resonance frequencies are degenerated. The different locations of driving tips on the horn caused different elliptical trajectories, and how variation influence on motor mechanical output is studied through FEM method. The motor got best performance when positioning driving tips on antinodes of the bending wave. Typical output of the prototype is no-load velocity of 480mm/s and maximum thrust force of 25N. |
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Keywords:
ultrasonic linear motor
Langevin type transducer
exponential shape horn
finite element analysis
elliptical trajectory
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收稿日期 2006-11-09 修回日期 1900-01-01 网络版发布日期 |
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DOI: |
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基金项目:
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通讯作者: 石胜君 |
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作者简介: |
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作者Email: ssjsir@163.com |
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| 参考文献： |
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| 本刊中的类似文章 |
| 1．姚志远 杨东 赵淳生.杆结构直线超声电机的结构设计和功率流分析[J]. 中国电机工程学报, 2009,29(24): 56-60 |
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| Copyright by 中国电机工程学报 |
