| 非线性混沌振动响应的试验分析 |
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| 引用本文： | 刘树勇,位秀雷,许师凯,杨庆超.非线性混沌振动响应的试验分析[J].噪声与振动控制,2014,34(2):5-7. |
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| 作者姓名： | 刘树勇 位秀雷 许师凯 杨庆超 |
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| 作者单位： | （ 海军工程大学 动力工程学院， 武汉 430033 ） |
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| 基金项目： | 国家自然科学基金（基金编号：51179197）;海洋工程国家重点实验室（上海交通大学）开放课题（1009） |
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| 摘 要： | 对非线性隔振系统而言，当其参数处于特定区域时，系统可能处于混沌状态，从而在线谱激励下可以产生具有宽谱特征的混沌响应，以达到消减潜艇辐射噪声线谱成分的目的。设计了分段隔振系统并开展试验研究，利用改进小波去噪算法和空间栅格特征提取方法对实测信号进行滤波和识别处理。试验中观察到了系统复杂的动力学行为，为混沌的工程应用提供了有益参考。
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| 关 键 词： | 振动与波 非线性 混沌振动 空间栅格法 试验研究 |
| 收稿时间： | 2013-04-12 |
Experimental Research of Nonlinear Chaotic Vibration Responses |
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| LIU Shu-yong,WEI Xiu-lei,XU Shi-kai,YANG Qing-chao.Experimental Research of Nonlinear Chaotic Vibration Responses[J].Noise and Vibration Control,2014,34(2):5-7. |
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| Authors: | LIU Shu-yong WEI Xiu-lei XU Shi-kai YANG Qing-chao |
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| Affiliation: | ( College of Power Engineering, Naval University of Engineering, Wuhan 430033, China ) |
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| Abstract: | The nonlinear vibration isolation system is probably in a chaotic state when its parameters are within acertain range. Then, chaotic responses with wide spectral characteristic may appear under linear spectrum excitation so thatthe linear spectrum components of radiation noise of submarines can be eliminated. In this article, the piecewise vibrationisolation system is designed and experimental research is carried out. Then, the measured signals are filtered and identifiedbased on the improved wavelet transform and space grid method. Complex dynamic behavior of the system is observed inthe experiment. This work has provided useful guide for engineering application of chaotic systems. |
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| Keywords: | vibration and wave nonlinear chaotic vibration space grid method experimental research |
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