A Self-Propelled Linear Piezoelectric Micro-Actuator Inspired by the Movement Patterns of Aquatic Beetles.

IF 3 3区工程技术 Q2 CHEMISTRY, ANALYTICAL

Micromachines Pub Date : 2024-09-27 DOI:10.3390/mi15101197

Xinjie Wang, Gen Wang

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引用次数: 0

Abstract

The locomotion mechanisms and structural characteristics of insects in nature offer new perspectives and solutions for designing miniature actuators. Inspired by the underwater movement of aquatic beetles, this paper presents a bidirectional self-propelled linear piezoelectric micro-actuator (SLPMA), whose maximum size in three dimensions is currently recognized as the smallest known of the self-propelled piezoelectric linear micro-actuators. Through the superposition of two bending vibration modes, the proposed actuator generates an elliptical motion trajectory at its driving feet. The size was determined as 15 mm × 12.8 mm × 5 mm after finite element analysis (FEA) through modal and transient simulations. A mathematical model was established to analyze and validate the feasibility of the proposed design. Finally, a prototype was fabricated, and an experimental platform was constructed to test the driving characteristics of the SLPMA. The experimental results showed that the maximum no-load velocity and maximum carrying load of the prototype in the forward motion were 17.3 mm/s and 14.8 mN, respectively, while those in the backward motion were 20.5 mm/s and 15.9 mN, respectively.

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受水生甲虫运动模式启发的自推进线性压电微执行器

自然界中昆虫的运动机制和结构特征为设计微型致动器提供了新的视角和解决方案。受水生甲虫水下运动的启发，本文提出了一种双向自走式线性压电微型致动器（SLPMA），其最大三维尺寸是目前已知自走式压电线性微型致动器中最小的。通过两种弯曲振动模式的叠加，拟议的致动器在其驱动脚处产生了椭圆运动轨迹。通过模态和瞬态模拟进行有限元分析（FEA）后，确定其尺寸为 15 mm × 12.8 mm × 5 mm。建立数学模型是为了分析和验证拟议设计的可行性。最后，制作了一个原型，并搭建了一个实验平台来测试 SLPMA 的驱动特性。实验结果表明，原型在向前运动时的最大空载速度和最大载荷分别为 17.3 mm/s 和 14.8 mN，而在向后运动时则分别为 20.5 mm/s 和 15.9 mN。

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来源期刊

Micromachines NANOSCIENCE & NANOTECHNOLOGY-INSTRUMENTS & INSTRUMENTATION

CiteScore

5.20

自引率

14.70%

发文量

1862

审稿时长

16.31 days

期刊介绍： Micromachines (ISSN 2072-666X) is an international, peer-reviewed open access journal which provides an advanced forum for studies related to micro-scaled machines and micromachinery. It publishes reviews, regular research papers and short communications. Our aim is to encourage scientists to publish their experimental and theoretical results in as much detail as possible. There is no restriction on the length of the papers. The full experimental details must be provided so that the results can be reproduced.