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Modal Analysis of Low-level-light Aiming Sight-Glass Based on Vibration Testing Conditions

机译:基于振动测试条件的微光瞄准镜的模态分析

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摘要

Low-level-light ( LLL ) sight-glass measurement technologies based on multiple environmental testing conditions are always concerned by military equipments manufacturers. The article puts forward the concrete steps and method of vibration environmental testing measurement according to military optical equipments environments testing standards. Using vibration theory and mathematical modeling analysis, vibration modal of LLL aiming sight-glass based on vibration testing conditions is constructed and analyzed. In order to study dynamic characteristic of vibration system, coordinates of the physical model are converted to modal coordinates. By means of equating system modal, vibration modal is impacted by damping coefficient. Emulating the system under the damping coefficient ξ from 0.1 to 1 andrnnatural frequency ω_n is 89, the results indicate that damped systems is influenced by coordinates conversion of transferrnfunction. The structure with less damping usually can be regarded as the proportional damping system otherwise can be considered as the general damping system.
机译:基于多种环境测试条件的低光(LLL)视镜测量技术一直是军用设备制造商关注的问题。根据军用光学仪器环境测试标准,提出了振动环境测试测量的具体步骤和方法。利用振动理论和数学模型分析,构造并分析了基于振动测试条件的LLL瞄准镜的振动模态。为了研究振动系统的动态特性,将物理模型的坐标转换为模态坐标。通过使系统模态相等,振动模态受到阻尼系数的影响。在阻尼系数ξ从0.1到1且固有频率ω_n为89的情况下对系统进行仿真,结果表明,阻尼系统受传递函数坐标转换的影响。阻尼较小的结构通常可以视为比例阻尼系统,否则可以视为常规阻尼系统。

著录项

  • 来源
    《Optoelectronic measurement technology and systems》|2009年|P.75110Y.1-75110Y.6|共6页
  • 会议地点 Shanghai(CN);Shanghai(CN)
  • 作者单位

    Group of 442, Institute of Electronic Engineering and Optical Technology, Nanjing University of science and Technology,Nanjing 210094 China Department of Electronic and Electrician Engineering, Nan Yang Institute of Technology, NanYang 473004 China;

    rnGroup of 442, Institute of Electronic Engineering and Optical Technology, Nanjing University of science and Technology,Nanjing 210094 China Department of Electronic and Electrician Engineering, Nan Yang Institute of Technology, NanYang 473004 China;

    rnGroup of 442, Institute of Electronic Engineering and Optical Technology, Nanjing University of science and Technology,Nanjing 210094 China Department of Electronic and Electrician Engineering, Nan Yang Institute of Technology, NanYang 473004 China;

    rnGroup of 442, Institute of Electronic Engineeri;

  • 会议组织
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 光学仪器;
  • 关键词

    vibration circumstances testing; LLL weapon sight; modal analysis;

    机译:振动情况测试; LLL武器瞄准具;模态分析;

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