受蚱蜢启发的微型压电驱动器集成了三个振动单元

IF 7.1 1区工程技术 Q1 ENGINEERING, MECHANICAL

International Journal of Mechanical Sciences Pub Date : 2025-06-04 DOI:10.1016/j.ijmecsci.2025.110458

Yingzhi Wang , Bingwei Zhang , Jie Deng , Shijing Zhang, Weishan Chen, Yingxiang Liu

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引用次数: 0

摘要

微型压电驱动器（MPAs）由于其克级质量、亚微米分辨率和毫瓦级功耗而得到了广泛的研究。然而，在保持小型化的同时提高其输出特性（力、速度、分辨率）仍然具有挑战性。本文提出了一种由三个振动单元（vu）和两个集成隔振机构（VIMs）组成的三振动单元MPA （3VU-MPA）。采用传递矩阵法和有限元法对VIM的设计进行了分析。VIM设计使3VU-MPA能够在三种工作模式下工作：单独激励、交流激励和协同激励。制作了一个原型，并进行了实验评估，尺寸为15.4 × 15.6 × 30 mm3，重4.7 g。在空载条件下，3VU-MPA的最大载荷速度为351.8 mm/s，减速条件下的最大载荷能力为203.5 g。爬升垂直杆时，最大速度为197.7 mm/s，牵引力为46.1 mN。得到了0.15 μm的位移分辨率。这项工作为提高海洋保护区的输出性能和工作模式多样性提供了一种可行的方法。

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A grasshopper-inspired miniature piezoelectric actuator integrated with three vibrating units

Miniature piezoelectric actuators (MPAs) have been extensively investigated owing to their gram-scale mass, sub-micrometer resolution, and milliwatt-range power consumption. However, improving their output characteristics (force, speed, resolution) while maintaining miniaturization remains challenging. In this study, a three-vibrating-unit MPA (3VU-MPA) was proposed, which consists of three vibrating units (VUs) and two integrated vibration isolation mechanisms (VIMs). The design of the VIM was analyzed using the transfer matrix method and finite element analysis. The VIM design enables the 3VU-MPA to work in three working modes: individual excitation, alternating excitation and cooperative excitation. A prototype was fabricated and experimentally evaluated, measuring 15.4 × 15.6 × 30 mm³ and weighing 4.7 g. A maximum speed of 351.8 mm/s was achieved by the 3VU-MPA under no-load conditions, while a maximum payload capacity of 203.5 g was obtained at reduced speed. A maximum speed of 197.7 mm/s was achieved with a traction force of 46.1 mN when climbing vertical rods. Additionally, a displacement resolution of 0.15 μm was obtained. This work provides a feasible approach to enhance both output performance and working mode diversity in MPAs.

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来源期刊

International Journal of Mechanical Sciences 工程技术-工程：机械

CiteScore

12.80

自引率

17.80%

发文量

769

审稿时长

19 days

期刊介绍： The International Journal of Mechanical Sciences (IJMS) serves as a global platform for the publication and dissemination of original research that contributes to a deeper scientific understanding of the fundamental disciplines within mechanical, civil, and material engineering. The primary focus of IJMS is to showcase innovative and ground-breaking work that utilizes analytical and computational modeling techniques, such as Finite Element Method (FEM), Boundary Element Method (BEM), and mesh-free methods, among others. These modeling methods are applied to diverse fields including rigid-body mechanics (e.g., dynamics, vibration, stability), structural mechanics, metal forming, advanced materials (e.g., metals, composites, cellular, smart) behavior and applications, impact mechanics, strain localization, and other nonlinear effects (e.g., large deflections, plasticity, fracture). Additionally, IJMS covers the realms of fluid mechanics (both external and internal flows), tribology, thermodynamics, and materials processing. These subjects collectively form the core of the journal's content. In summary, IJMS provides a prestigious platform for researchers to present their original contributions, shedding light on analytical and computational modeling methods in various areas of mechanical engineering, as well as exploring the behavior and application of advanced materials, fluid mechanics, thermodynamics, and materials processing.