| 电气噪声对地音传感器低频扩展范围的影响分析 |
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| 引用本文： | 刘雷钧,李小平,廖飞红.电气噪声对地音传感器低频扩展范围的影响分析[J].机械,2011(2):1-7. |
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| 作者姓名： | 刘雷钧 李小平 廖飞红 |
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| 作者单位： | 华中科技大学,数字制造装备与技术国家重点实验室,湖北,武汉,430074 |
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| 基金项目： | 国家自然科学基金，国家973计划，中央高校基本科研业务费用专项资金 |
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| 摘 要： | 地音传感器被广泛采用串联校正方法进行低频扩展以实现对低频及超低频振动的准确测量,电气噪声是影响其低频扩展范围的关键因素.建立了包含测量、预放大、传输及串联校正环节在内的多输入单输出地音传感器测振模型,定量分析了初、次级电气噪声水平与地音传感器低频扩展范围之间的关系.研究结果表明,初级电气噪声是限制地音传感器低频扩展范围...
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| 关 键 词： | 地音传感器 电气噪声 低频扩展范围 串联校正 主动减振 |
Effect of electrical noise on low frequency extension range of geophone |
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| LIU Lei-jun,LI Xiao-ping,LIAO Fei-hong.Effect of electrical noise on low frequency extension range of geophone[J].Machinery,2011(2):1-7. |
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| Authors: | LIU Lei-jun LI Xiao-ping LIAO Fei-hong |
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| Affiliation: | LIU Lei-jun,LI Xiao-ping,LIAO Fei-hong(State Key Laboratory of Digital Manufacturing Equipment and Technology,Huazhong University of Science and Technology,Wuhan 430074,China) |
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| Abstract: | Series correction method is widely used in low frequency extension of geophone to make the sensor to measure low frequency or ultra-low frequency vibration accurately.And electrical noise is the key influence factor which determines the low frequency extension range.This article establishes a multi-input single-output measurement model of geophone including measurement,amplification,transportation and series correction,and analyzes the relationship between electrical noise and low frequency extension range ... |
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| Keywords: | geophone electrical noise low frequency extension range series correction active vibration |
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