Pan Qiaosheng, Miao Enming, Wu Bingxuan, Chen Weikang, Lei Xiujun, He Liangguo
School of Instrument Science and Opto-Electronics Engineering, Hefei University of Technology, Hefei, Anhui 230009, China.
Department of Precision Machinery and Precision Instrumentation, University of Science and Technology of China, Hefei, Anhui 230026, China.
Rev Sci Instrum. 2017 Jul;88(7):075002. doi: 10.1063/1.4985112.
A novel, bio-inspired, single-phase driven piezoelectric linear motor (PLM) using an asymmetric stator was designed, fabricated, and tested to avoid mode degeneracy and to simplify the drive mechanism of a piezoelectric motor. A piezoelectric transducer composed of two piezoelectric stacks and a displacement amplifier was used as the driving element of the PLM. Two simple and specially designed claws performed elliptical motion. A numerical simulation was performed to design the stator and determine the feasibility of the design mechanism of the PLM. Moreover, an experimental setup was built to validate the working principles, as well as to evaluate the performance, of the PLM. The prototype motor outputs a no-load speed of 233.7 mm/s at a voltage of 180 V and a maximum thrust force of 2.3 N under a preload of 10 N. This study verified the feasibility of the proposed design and provided a method to simplify the driving harmonic signal and structure of PLMs.
设计、制造并测试了一种新型的、受生物启发的、采用非对称定子的单相驱动压电线性电机（PLM），以避免模态简并并简化压电电机的驱动机构。由两个压电叠堆和一个位移放大器组成的压电换能器用作PLM的驱动元件。两个简单且经过特殊设计的爪执行椭圆运动。进行了数值模拟以设计定子并确定PLM设计机制的可行性。此外，搭建了一个实验装置来验证PLM的工作原理并评估其性能。该原型电机在180 V电压下输出空载速度为233.7 mm/s，在10 N预载下最大推力为2.3 N。本研究验证了所提设计的可行性，并提供了一种简化PLM驱动谐波信号和结构的方法。
