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Coupled dynamic reaction force study of a large-aperture piezoelectric fast steering mirror

机译：大孔径压电快速转向镜的耦合动态反作用力研究

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摘要

The reaction force of a large-aperture piezoelectric fast steering mirror (PFSM) has adverse coupling interference for the stability and pointing accuracy of laser beams, and the dynamic characteristics of the reaction force are coupled with the inner components of the PFSM. In order to compensate for and eliminate the reaction force, it is essential to accurately analyze the dynamic characteristics. In this paper, a simplified piezoelectric-coupling model of PFSM is established. The coupling mathematical equations for investigating the characteristics of the reaction force are deducted based on the piezoelectric constitutive equation andHamiltonian's principle. Then the coupling characteristics of the reaction force are probed by a finite element (FE) piezoelectric-coupling method. The simulations for three large apertures' (250, 320, and 400 mm) FE models show that the reaction force has a linear positive correlation with the actuating voltage, and coupled with the materials of the central flexure hinge, the relationship between the reaction force and driving frequency is not completely quadratic. Experiments with the 320 mm aperture are completed, and the testing results are consistent with the mathematical model and the FE piezoelectric-coupling simulation. The dynamic characteristics of the reaction force demonstrated in this paper are significance for the accurate estimation of the reaction force, the design of compensation structure, and the optimization of algorithm for beam jitter controlling. (C) 2021 Optical Society of America
机译：大口径压电快速转向镜（PFSM）的反作用力对光束的稳定性和指向精度有不利的耦合干扰，反作用力的动态特性与PFSM的内部元件耦合。为了补偿和消除反作用力，必须准确分析其动态特性。本文建立了一个简化的PFSM压电耦合模型。基于压电本构方程和哈密顿原理，推导了研究反作用力特性的耦合数学方程。然后用有限元压电耦合方法研究了反作用力的耦合特性。对三个大孔径（250、320和400mm）有限元模型的模拟表明，反作用力与驱动电压呈线性正相关，并且与中心柔性铰链的材料耦合，反作用力与驱动频率之间的关系不是完全二次的。完成了320毫米孔径的实验，测试结果与数学模型和有限元压电耦合模拟结果一致。本文所展示的反作用力的动态特性对于精确估计反作用力、设计补偿结构和优化波束抖动控制算法具有重要意义。（2021）美国光学学会

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  • 来源
    《Applied optics》 |2021年第12期|共10页
  • 作者

    Ran Bing; Wen Lianghua; Zhu Licheng; Yang Kangjian; Yang Ping; Du Rui; Wang Shuai; Xu Bing;

  • 作者单位

    Chinese Acad Sci Key Lab Adapt Opt Chengdu 610209 Peoples R China;

    Chinese Acad Sci Key Lab Adapt Opt Chengdu 610209 Peoples R China;

    Chinese Acad Sci Key Lab Adapt Opt Chengdu 610209 Peoples R China;

    Chinese Acad Sci Key Lab Adapt Opt Chengdu 610209 Peoples R China;

    Chinese Acad Sci Key Lab Adapt Opt Chengdu 610209 Peoples R China;

    Chinese Acad Sci Key Lab Adapt Opt Chengdu 610209 Peoples R China;

    Chinese Acad Sci Key Lab Adapt Opt Chengdu 610209 Peoples R China;

    Chinese Acad Sci Key Lab Adapt Opt Chengdu 610209 Peoples R China;

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  • 正文语种 eng
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