| 磁铁式弦振实验仪的研制 |
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| 引用本文： | 邓正才,康强,丁道一,何焰蓝.磁铁式弦振实验仪的研制[J].物理实验,2007,27(12):21-23,26. |
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| 作者姓名： | 邓正才 康强 丁道一 何焰蓝 |
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| 作者单位： | 国防科学技术大学,理学院,物理系,湖南,长沙,410073 |
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| 摘 要： | 介绍了磁铁式弦振实验仪的测量机理和信号处理方法.在激振信号作用下,磁铁式弦振传感器的钢弦因受洛伦兹力而变形并作横向振动,利用电磁感应原理得到同频率的感应电势,根据钢弦振动的频率可算出传感器受力和变形.
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| 关 键 词： | 传感器 洛伦兹力 单片机 |
| 文章编号： | 1005-4642（2007）12-0021-03 |
| 收稿时间： | 2007-06-26 |
| 修稿时间： | 2007-09-02 |
Research on magnetic string-vibration instrument |
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| DENG Zheng-cai,KANG Qiang,DING Dao-yi,HE Yan-lan.Research on magnetic string-vibration instrument[J].Physics Experimentation,2007,27(12):21-23,26. |
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| Authors: | DENG Zheng-cai KANG Qiang DING Dao-yi HE Yan-lan |
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| Abstract: | The structure and performance of a magnetic string-vibration instrument are detailed.When stimulated by pulsed currents,the string vibrates at a frequency determined by the string's tension.A single-chip computer sends out stimulating pulses,measures and analyzes the string's vibration response under different strain or stress,and at the same time computes the corresponding tension,strain and stress. |
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| Keywords: | sensor Lorentz force single-chip computer |
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