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首页> 外文期刊>Sensors and Actuators, A. Physical >A new methodology for developing flexure-hinged displacement amplifiers with micro-vibration suppression for a giant magnetostrictive micro drive system
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A new methodology for developing flexure-hinged displacement amplifiers with micro-vibration suppression for a giant magnetostrictive micro drive system

机译：一种新方法，用于开发弯曲铰接位移放大器，为巨型磁致伸缩微型驱动系统进行微振动抑制

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摘要

Flexure-hinged displacement amplifiers play an important part in ultra-precision engineering due to their advantages of no friction, no backlash, compactness, high resolution and so on. In fact, the flexure hinged displacement amplifier is initially proposed for addressing the travel shortcoming of piezoelectric or magnetostrictive actuators. However, some new challenges such as micro-vibration isolation and long service life, etc., arouse attentions especially when working in the harsh environment. Therefore, a new methodology for designing amplifier which could handle such, issues is proposed and discussed in this paper. The focus of this study is on the design, theory analysis, and optimization of amplifiers, not only with the purpose of providing a larger displacement output, but also achieving micro-vibration isolation in desired frequency band. First, a generalized model for flexure hinges, the largest principal tensile stress and fatigue safety factor are formulated mathematically under combined tension and bending loads. Then the applied loads acting on each flexure hinge is calculated according to pseudo-rigid-body model. The equivalent dynamic model is established by Lagrange method. Whereafter, the procedure of the methodology is summarized and a different optimization strategy is implemented. Finally, a prototype is fabricated and tested. The experiments and simulation results confirm that the amplifier can achieve the desired amplification ratio and passive vibration isolation, which validate the effectiveness of this methodology. (C) 2017 Elsevier B.V. All rights reserved.
机译：由于它们没有摩擦，无间隙，紧凑性，高分辨率等，因此柔性铰接位移放大器在超精密工程中发挥了重要组成部分。实际上，最初提出了挠曲铰接位移放大器，用于解决压电或磁致伸缩致动器的行驶缺点。然而，微振隔离和长期使用寿命等一些新的挑战，尤其是在恶劣环境中的工作时引起注意。因此，在本文中提出并讨论了可以处理此类放大器的新方法，并在本文中讨论了问题。本研究的重点是放大器的设计，理论分析和优化，不仅具有提供更大的位移输出的目的，而且还实现了所需频带中的微振隔离。首先，在组合的张力和弯曲载荷下，在数学上制定挠性铰链的广义模型，最大的主拉力和疲劳安全系数。然后根据伪刚性主体模型计算作用在每个挠曲铰链上的施加的载荷。等效动态模型由拉格朗日方法建立。此后，概述了方法的过程，并实施了不同的优化策略。最后，制造和测试了原型。实验和仿真结果证实，放大器可以实现所需的放大比和被动振动隔离，验证该方法的有效性。 （c）2017年Elsevier B.V.保留所有权利。

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