A High-Power Linear Ultrasonic Motor Using Bending Vibration Transducer
A High-Power Linear Ultrasonic Motor Using Bending Vibration Transducer
复制标题
采用弯曲振动传感器的大功率直线超声波电机
DOI：
10.1109/tie.2012.2233691
复制
发表时间：
2013-11-01
影响因子：
7.7
通讯作者：
Yang, Xiaohui
中科院分区：
文献类型：
--
作者：
Liu, Yingxiang;Chen, Weishan;Yang, Xiaohui
针对复合振动模态超声电机设计中普遍存在的模态退化问题，提出了一种采用弯曲振动换能器的大功率直线超声电机。在这种新的设计中，两个正交的弯曲振动模式具有相同的顺序叠加在电机和两个驱动脚产生椭圆运动。电机采用方形截面结构，保证两个弯曲模态具有相同的谐振频率。在介绍其工作原理的基础上，采用有限元法对电机进行了分析。制作了样机并进行了测量。原型的典型输出是1527 mm/s的空载速度和200 Vrms电压下50 N的最大推力。该研究验证了所提出设计的可行性，并为提高超声波电机的输出功率提供了一种途径。
To overcome the modal degeneration problem that commonly exists in the design of ultrasonic motors (USMs) using composite vibration modes, a high-power linear USM using a bending vibration transducer is proposed in this paper. In this new design, two orthogonal bending vibration modes with the same order are superimposed in the motor and generate elliptical motions at the two driving feet. Square cross-section structure is adopted by the motor to ensure that the two bending modes have the same resonance frequency. After the introduction of the working principle, the motor is analyzed by using finite-element method. A prototype motor is fabricated and measured. Typical output of the prototype is a no-load speed of 1527 mm/s and a maximum thrust force of 50 N at a voltage of 200 Vrms. This study verifies the feasibility of the proposed design and provides a way to improve the output power of USMs.