可变刚度快速转向镜的设计与分析

IF 2.2 3区工程技术 Q2 ENGINEERING, MECHANICAL

Actuators Pub Date : 2023-12-22 DOI:10.3390/act13010005

Jin Luo, Yao Mao, Wang Dai, Feixiang Yang, Luyao Zhang, Li Miao

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引用次数: 0

摘要

快速转向镜（FSM）中柔性铰链的不可变刚度无法适应不同的负载需求。为解决这一问题，本文提出了一种创新的可变刚度旋转机构，设计用于 FSM。首先，介绍了变刚度机构的工作原理，分析了各结构长度对刚度的影响以及非线性影响。然后，将变刚度机构应用于 FSM 进行变刚度实验和变载荷实验。实验结果表明，本文设计的变刚度机构可以实现刚度的变化。三组实验的实验值与理论值的误差分别为 +5.72%、+7.57% 和 +6.57%。FSM 的刚度非线性很小，加载前后的共振频率一致。变刚度机构可以通过改变 FSM 的旋转刚度来改变频率特性。

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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Design and Analysis of Variable-Stiffness Fast-Steering Mirror

The non-variable stiffness of the flexible hinge in the fast-steering mirror (FSM) cannot adapt to varying load demands. To address this issue, this paper presents an innovative variable-stiffness rotational mechanism designed for use with FSMs. Firstly, the working principle of the variable-stiffness mechanism is introduced, and the influence of the length of each structure on the stiffness and the nonlinear influence are analyzed. Then, the variable-stiffness mechanism is applied to the FSM for the variable-stiffness experiment and variable-load experiment. The experimental results show that the variable-stiffness mechanism designed in this paper can realize the change in stiffness. The errors between the experimental value and the theoretical value of the three sets of experiments are +5.72%, +7.57%, and +6.57%. The FSM’s stiffness nonlinearity is very small, and the resonance frequency of the FSM before and after increasing the load can be consistent. The variable-stiffness mechanism can change the frequency characteristics by changing the rotational stiffness of the FSM.

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来源期刊

Actuators Mathematics-Control and Optimization

CiteScore

3.90

自引率

15.40%

发文量

315

审稿时长

11 weeks

期刊介绍： Actuators (ISSN 2076-0825; CODEN: ACTUC3) is an international open access journal on the science and technology of actuators and control systems published quarterly online by MDPI.