| 消除传感器附加质量影响的机枪动力特性测试技术 |
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| 引用本文： | 董自卫,唐力伟,高星亮,栾军英. 消除传感器附加质量影响的机枪动力特性测试技术[J]. 兵工自动化, 2007, 26(8): 63-65 |
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| 作者姓名： | 董自卫 唐力伟 高星亮 栾军英 |
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| 作者单位： | 军械工程学院,兵器测试中心,河北,石家庄,050003;武汉军械士官学校,枪炮系,湖北,武汉,430075;军械工程学院,兵器测试中心,河北,石家庄,050003 |
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| 基金项目： | 军械工程学院校科研和教改项目 |
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| 摘 要： | 消除传感器附加质量对机枪模态参数识别结果影响的方法,基于LMS系统建立其模态试验系统.全枪模态试验通过单点瞬态激励、多点测量方法,测出机枪上各测点的频响函数,识别出机枪的各阶模态参数.为提高频响函数的信噪比和锤击激振的测试精度,可对激励信号加力窗处理.利用负延时触发采样以捕捉到完整的冲击力波形,对响应信号加指数窗处理可解决响应信号衰减过快引起的泄漏问题.
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| 关 键 词： | 机枪 动力特性测试 传感器附加质量 LMS系统 模态分析 |
| 文章编号： | 1006-1576（2007）08-0063-03 |
| 收稿时间： | 2007-05-24 |
| 修稿时间： | 2007-05-242007-07-12 |
Scatter-Gun Dynamic Characteristics Test Technique for Eliminating Effects of Transducer Additional Quality |
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| DONG Zi-wei,TANG Li-wei,GAO Xing-liang,LUAN Jun-ying. Scatter-Gun Dynamic Characteristics Test Technique for Eliminating Effects of Transducer Additional Quality[J]. Ordnance Industry Automation, 2007, 26(8): 63-65 |
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| Authors: | DONG Zi-wei TANG Li-wei GAO Xing-liang LUAN Jun-ying |
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| Affiliation: | 1, Weapon Test Center, Ordnance Engineering College, Shijiazhuang 050003, China; 2. Dept. of Gun, Wuhan Ordnance Petty Officer Institute of PLA, Wuhan 430075, China |
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| Abstract: | The method for eliminating effects of transducer additional quality on scatter-gun modal parameter recognizing establishes the modal testing system based on LMS system. The modal testing measures the frequency call function of test points on scatter-gun and recognizes the step modal parameters by single point momentary stimulation and multi-points measuring. Carry out power window processing on stimulation signal for improving SNR of frequency call function and testing precision of hammering. Adopts trigger sampling of minus time-delay to capture the complete wallop wave. Carry out index window processing on call signal for solving the leakage which caused by fast attenuation of call signal. |
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| Keywords: | Scatter-gun Dynamic characteristics test Transducer additional quality LMS system Modal analysis |
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