| 火炮随机激励对天线指向精度的影响 |
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| 引用本文： | 张小安,贾建援. 火炮随机激励对天线指向精度的影响[J]. 电子机械工程, 2004, 20(4): 1-3,8 |
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| 作者姓名： | 张小安 贾建援 |
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| 作者单位： | 西安导航技术研究所,陕西,西安,710068;西安电子科技大学,陕西,西安,710071 |
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| 摘 要： | 针对安装于炮座上，处于恶劣振动环境下的天线座结构研制问题，运用ANSYS有限元分析软件的随机振动谱分析工具，以天线座安装基面上实测的振动功率谱密度为激励，建立有限元动力分析模型，得出该结构系统的随机振动响应统计值；对位移响应谱作近似时域化处理及互相关分析，计算了随机振动对天线指向精度的影响。
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| 关 键 词： | 有限元分析 天线座结构 随机振动 |
| 文章编号： | 1008-5300(2004)04-0001-03 |
The Effect of Gun Random Excitation on the Pointing Accuracy of an Antenna |
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| ZHANG Xiao-an and JIA Jian-yuan. The Effect of Gun Random Excitation on the Pointing Accuracy of an Antenna[J]. Electro-Mechanical Engineering, 2004, 20(4): 1-3,8 |
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| Authors: | ZHANG Xiao-an and JIA Jian-yuan |
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| Affiliation: | ZHANG Xiao-an~1,JIA Jian-yuan~2 |
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| Abstract: | In the light of design requirement of an antenna pedestal fixed on gun foundation.This paper, basing on the vibration power spectrum density which has been measured relative to the antenna pedestal reference plane establishes the finite element dynamics model. With the power spectrum density analysis in the software ANSYS, the random vibration response statistics of the structure system is obtained. The method of transformation of displacement response spectrum to domain of time and cross correlation analysis are used to analyze and calculate the radar antenna pointing accuracy under the condition of random vibration. |
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| Keywords: | finite element analysis antenna pedestal random vibration |
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