| 自行火炮路面振动信号时频特性研究 |
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| 引用本文： | 郑绍坤,郑坚,熊超,张军.自行火炮路面振动信号时频特性研究[J].传感器与微系统,2009,28(5). |
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| 作者姓名： | 郑绍坤 郑坚 熊超 张军 |
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| 作者单位： | 1. 军械工程学院,火炮工程系,河北,石家庄,050003
2. 沈阳军代局驻674厂军代室,黑龙江,哈尔滨,150056 |
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| 摘 要： | 自行火炮越野行驶减速停车过程车体的振动是非平稳的，传统的信号处理方法难以得出更多有用信息。利用连续小波变换在时域和频域具有的良好局部化特性，结合传统信号分析手段，对某型自行火炮减速停车过程的振动加速度信号进行了时频分析，研究了自行火炮的非平稳振动特性。结果表明：车体振动加速度的幅值和频率均随车速的提高而增大，采样信号小波系数灰度图给出了火炮振动特征随时间和频率的变化规律，克服了传统分析方法的不足。另外，实施了连续小波变换尺度的非等间隔选取，在不影响低频分析准确性的同时，处理结果对分析信号高频成分非常有效。
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| 关 键 词： | 自行火炮 连续小波变换 时频分析 |
Study on time frequency characteristics of self-propelled gun's road vibration signal |
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| ZHENG Shao-kun,ZHENG Jian,XIONG Chao,ZHANG Jun.Study on time frequency characteristics of self-propelled gun's road vibration signal[J].Transducer and Microsystem Technology,2009,28(5). |
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| Authors: | ZHENG Shao-kun ZHENG Jian XIONG Chao ZHANG Jun |
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| Affiliation: | ZHENG Shao-kun1,ZHENG Jian1,XIONG Chao1,ZHANG Jun2(1.Department of Artillery Engineering,Ordnance Engineering College,Shijiazhuang 050003,China,2.The Representative Office Stationing in No.674 State Owned Factory,Harbin 150056,China) |
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| Abstract: | The road vibration signal of self-propelled gun when decelerating on rough-terrain is non-stationary.The traditional signal process can not get more useful information.Associated traditional signal process and utilizded the specific localize characteristic of continuous wavelet transform(CWT) in time and frequency domains,the non-stationary vibration properties of self-propelled gun is studied by analyzing the deceleration vibration acceleration signal with time frequency analysis.The result indicates that ... |
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| Keywords: | self-propelled gun continuous wavelet transform (CWT) time frequency analysis |
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