Design of a linear-rotary ultrasonic motor for optical focusing inspired by the bionic motion principles of the earthworms

IF 4.5 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

International Journal of Smart and Nano Materials Pub Date : 2022-04-03 DOI:10.1080/19475411.2022.2084173

Yingzhi Wang, Jie Deng, Shijing Zhang, He Li, Weishan Chen, Yingxiang Liu

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引用次数: 10

Abstract

ABSTRACT Multi-motor configuration of multi-DOF (degree of freedom) optical system is a major source of redundant structure, putting a limitation on the simple and miniaturized design. Thus, a novel two-DOF ultrasonic motor (USM) is proposed to provide a feasible method of application in the lens autofocus of the optical system. The proposed USM operates by one longitudinal mode and two orthogonal bending modes, which is inspired by the bionic motion principle of the earthworms. The frequency degeneration among the three working modes is performed, and the working principle of the USM is verified via the FEM simulation. A prototype of the two-DOF USM is fabricated, and its mechanical output characteristics are tested. The experimental results indicate that the prototype achieves the maximum rotary and linear speeds of 3319.6 rpm and 57.6 mm/s, respectively. Furthermore, we demonstrate the result of a simple focusing experiment using the prototype and obtain a series of clear pictures, which verifies the feasibility of application in the optical focusing system. Graphical Abstract

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受蚯蚓仿生运动原理的启发，用于光学聚焦的线性旋转超声电机的设计

多电机配置是多自由度光学系统冗余结构的主要来源，限制了系统的简洁化和小型化设计。为此，提出了一种新型的双自由度超声马达，为光学系统的镜头自动对焦提供了一种可行的应用方法。受蚯蚓仿生运动原理的启发，提出了一种纵向模式和两种正交弯曲模式的超声电机。对三种工作模式进行了频率退化，并通过有限元仿真验证了超声电机的工作原理。制作了二自由度超声电机样机，并对其机械输出特性进行了测试。实验结果表明，样机的最大转速为3319.6 rpm，最大线速度为57.6 mm/s。利用该样机进行了简单的对焦实验，获得了一系列清晰的图像，验证了在光学对焦系统中应用的可行性。图形抽象

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来源期刊

International Journal of Smart and Nano Materials MATERIALS SCIENCE, MULTIDISCIPLINARY-

CiteScore

6.30

自引率

5.10%

发文量

审稿时长

11 weeks

期刊介绍： The central aim of International Journal of Smart and Nano Materials is to publish original results, critical reviews, technical discussion, and book reviews related to this compelling research field: smart and nano materials, and their applications. The papers published in this journal will provide cutting edge information and instructive research guidance, encouraging more scientists to make their contribution to this dynamic research field.