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锁相技术乃是近代对于无线电信号之频率和相位进行同步控制之甚为重要的电子工程技术,巳在卫星通信工程、高频、甚高频通信工程等电子技术领域中获得广泛应用。本文简要介绍了锁相环路之相位数学模型及其线性化问题,重点研究了Nyquist准则被应用于分析线性锁相环路之稳定性,研究了应用poincare之二维相位平面图分析非线性锁相环路之稳定性,获得了合乎逻辑的结论。
Phase locking technology is an important modern electronic engineering technology for synchronously controlling the frequency and phase of radio signals. It has been widely used in the field of electronic technology such as satellite communications, high frequency and very high frequency communications. In this paper, the phase mathematical model of phase-locked loop and its linearization are briefly introduced. The Nyquist criterion is mainly studied for analyzing the stability of linear phase-locked loop. The application of poincare’s two- The stability of the loop, obtained the logical conclusion.