| 用相干函数消除系统反共振对燃气流冲击载荷识别结果的影响 |
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| 引用本文： | 张婷,连平.用相干函数消除系统反共振对燃气流冲击载荷识别结果的影响[J].振动与冲击,2008,27(12). |
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| 作者姓名： | 张婷 连平 |
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| 作者单位： | 1. 石家庄铁道学院力学系,石家庄,050043
2. 石家庄军械工程学院一系兵测中心,石家庄,050003 |
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| 摘 要： | 在进行燃气流冲击载荷识别时,识别结果中存在系统特性的影响.文献1]中,用系统的受迫响应进行识别.在识别结果中,系统反共振特性的影响仍不能消除.根据文献2],用相干函数对识别谱进行修正,在识别结果中可以很好地消除系统反共振特性的影响.
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| 关 键 词： | 载荷识别 零点 极点 频响函数 相干函数 |
REDUCING ANTIRESONANCE EFFECT WITH COHERENCE FUNCTION FOR LOAD IDENTIFICATION OF BURNING STREAM |
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| ZHANG Ting,LIAN Ping.REDUCING ANTIRESONANCE EFFECT WITH COHERENCE FUNCTION FOR LOAD IDENTIFICATION OF BURNING STREAM[J].Journal of Vibration and Shock,2008,27(12). |
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| Authors: | ZHANG Ting LIAN Ping |
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| Affiliation: | ZHANG Ting1,LIAN Ping2(1.Shijiazhuang railway institute,Shijiazhuang 050043,China,2.Shijiazhuang Ordnance Engineering College,Shijiazhuang 050003,China) |
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| Abstract: | There is effect of system characteristics on the estimated result when a shock load of the burning stream is identified.When the load is identified by use of a forced response of the system,the effect of antiresonance of the system could not be eliminated.The antiresonance effect is better eliminated while the identification spectrum is revised by means of coherence function. |
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| Keywords: | load identification pole zeros frequency respond function coherence function |
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