| 引入奈奎斯特(Nyquist)准则对反馈放大电路稳定性的分析 |
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| 引用本文： | 黄晓明.引入奈奎斯特(Nyquist)准则对反馈放大电路稳定性的分析[J].培训与研究,2006,23(2):61-62. |
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| 作者姓名： | 黄晓明 |
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| 作者单位： | 湖北教育学院物理与电子信息工程系 武汉430205 |
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| 摘 要： | 目前高等院校在模拟电子技术课程中对于负反馈放大电路稳定性进行分析时,一般采用波特图的分析方法。这种方法是将电路的幅频特性和相频特性曲线结合起来对环路增益进行分析,以此作为判断系统是否稳定的依据。由于激励信号是复数形式的变化量,因此我们还可以采用奈奎斯特准则,利用奈奎斯特图在复平面上的变化特点,对环路增益进行分析。
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| 关 键 词： | 反馈放大电路 奈奎斯特准则 奈奎斯特图 |
| 文章编号： | 1007-1687(2006)02-0061-02 |
| 收稿时间： | 10 11 2005 12:00AM |
| 修稿时间： | 2005年10月11 |
Analysis of the Stability of Feedback of Amplifier Circuit Based on Nyquist Rule |
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| HUANG Xiao-min.Analysis of the Stability of Feedback of Amplifier Circuit Based on Nyquist Rule[J].Training and Research-Journal of Hubei College of Education,2006,23(2):61-62. |
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| Authors: | HUANG Xiao-min |
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| Abstract: | The stability of feedbac k of amplifier circuit is often analyzed with bode in Simulation Electron and Technology in the advanced institutes. The method is to judge whether a system is stable by analyzing the amplification of loop circuit based on amplitude frequency response and phase frequency or not. This paper suggests that there is another better way to judge whether a system is stable or not--that is analyzing the amplification of loop circuit with the Nyquist rule. |
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| Keywords: | feedback of amplifier circuit Nyquist rule Nyquist curves |
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