Nonlinear design, analysis, and testing of a single-stage compliant orthogonal displacement amplifier with a single input force for microgrippers

IF 2.4 4区工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

Journal of Micromechanics and Microengineering Pub Date : 2024-06-27 DOI:10.1088/1361-6439/ad5a19

Weilin Chen, Zuyang Fan, Qinghua Lu, Yujie Xu, Zhihang Li, Huiling Wei, Qinghua Zhang and Lufeng Luo

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引用次数: 0

Abstract

To achieve dexterous and stable micro/nanomanipulation, a large grasping stroke, compact design, and parallel grasping are required for microgrippers; thus, a single-stage compliant orthogonal displacement amplifier (CODA) with a single input force would be an ideal transmission mechanism. However, the existing small-deflection-based design schemes cannot adapt to large deflections or shearing effect, thereby affecting the orthogonal movement transformation accuracy. This study proposed, analyzed, and experimentally investigated a nonlinear design scheme for a single-stage CODA with a single input force. First, the nonlinear design principle is described qualitatively. By combining closed-form analytical modelling, finite element analysis, and numerical fitting, the nonlinear extent of a pre-set variable cross-sectional beam in the CODA is formulated. By utilizing the beam constraint model and small-deflection-based modelling, the nonlinear extent of the undetermined uniform straight beam in the CODA is derived. Based on the design principle and nonlinear models, a nonlinear design scheme is proposed quantitatively. Finite element simulations and experimental tests are conducted to verify the proposed scheme, and the limitations of our previous study are revealed.

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单级顺应式正交位移放大器的非线性设计、分析和测试（用于微型夹具的单一输入力

为了实现灵巧稳定的微型/纳米机械手操作，微型机械手需要大抓取行程、紧凑设计和平行抓取；因此，单级顺应式正交位移放大器（CODA）与单一输入力将是理想的传动机构。然而，现有的基于小挠度的设计方案无法适应大挠度或剪切效应，从而影响了正交运动转换精度。本研究提出了一种单输入力单级 CODA 的非线性设计方案，并对其进行了分析和实验研究。首先，对非线性设计原理进行了定性描述。通过结合闭式分析建模、有限元分析和数值拟合，提出了 CODA 中预设变截面梁的非线性程度。利用梁约束模型和基于小挠度的建模，推导出 CODA 中未确定均匀直梁的非线性范围。根据设计原理和非线性模型，定量提出了非线性设计方案。通过有限元模拟和实验测试来验证所提出的方案，并揭示了我们之前研究的局限性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Micromechanics and Microengineering 工程技术-材料科学：综合

CiteScore

4.50

自引率

4.30%

发文量

136

审稿时长

2.8 months

期刊介绍： Journal of Micromechanics and Microengineering (JMM) primarily covers experimental work, however relevant modelling papers are considered where supported by experimental data. The journal is focussed on all aspects of: -nano- and micro- mechanical systems -nano- and micro- electomechanical systems -nano- and micro- electrical and mechatronic systems -nano- and micro- engineering -nano- and micro- scale science Please note that we do not publish materials papers with no obvious application or link to nano- or micro-engineering. Below are some examples of the topics that are included within the scope of the journal: -MEMS and NEMS: Including sensors, optical MEMS/NEMS, RF MEMS/NEMS, etc. -Fabrication techniques and manufacturing: Including micromachining, etching, lithography, deposition, patterning, self-assembly, 3d printing, inkjet printing. -Packaging and Integration technologies. -Materials, testing, and reliability. -Micro- and nano-fluidics: Including optofluidics, acoustofluidics, droplets, microreactors, organ-on-a-chip. -Lab-on-a-chip and micro- and nano-total analysis systems. -Biomedical systems and devices: Including bio MEMS, biosensors, assays, organ-on-a-chip, drug delivery, cells, biointerfaces. -Energy and power: Including power MEMS/NEMS, energy harvesters, actuators, microbatteries. -Electronics: Including flexible electronics, wearable electronics, interface electronics. -Optical systems. -Robotics.