| 基于矢量内积法的高精度数字相位差计 |
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| 引用本文： | 田桂平,万钧力,陈滟涛.基于矢量内积法的高精度数字相位差计[J].电测与仪表,2004,41(10):16-18. |
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| 作者姓名： | 田桂平 万钧力 陈滟涛 |
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| 作者单位： | 三峡大学,湖北,宜昌,443003;三峡大学,湖北,宜昌,443003;三峡大学,湖北,宜昌,443003 |
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| 基金项目： | 湖北省教育厅重点科研基金资助项目(2003A002) |
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| 摘 要： | 针对数字相位信号的检测特点，以矢量内积的理论为基础，提出了一种在数字信号处理(DSP)芯片上采用矢量内积的检相原理实现相位差测量的新方法，并介绍了这种检相系统的设计，给出了仿真结果，分析了检测误差。该系统不仅可消除信号幅值变化带来的影响，保证测量精度，提高系统的稳定性，且可实现实时在线处理，具有很高的实用性。
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| 关 键 词： | 矢量内积 DSP 相位差测量 |
| 文章编号： | 1001-1390(2004)10-0016-03 |
| 修稿时间： | 2004年7月25日 |
High precision digital phase detector based on inner product theory |
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| Tian Guiping,Wan Junli,Chen Yantao.High precision digital phase detector based on inner product theory[J].Electrical Measurement & Instrumentation,2004,41(10):16-18. |
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| Authors: | Tian Guiping Wan Junli Chen Yantao |
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| Abstract: | A new way of digital phase detector applied to the phase difference measurement is introduced in accordance with the characteristic of phase signal and the theory of inner product in this paper, which is realized on DSP chip TMS320VC5402.The system can improve the system's stability and enhance the measurement precision through eliminating the effect that is caused by the range changing of signal, also can realize process in real time online .The measurement result shows this method has high potential of application. |
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| Keywords: | inner product DSP phase difference measurement |
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