锁相环问题的仿真，可以解决数字锁相环的仿真问题

主要对锁相环的各环节进行仿真，能够实现相位的跟踪

这是改进的锁相环在simulink中的仿真模型。EPLL.增强型锁相环。

matlab实现GPS接收机中三阶锁相环跟踪环路

Matlab锁相环路代码phaselockedloopPLL-pll.m A phase-locked loop or phase lock loop is a control system that generates a signal that has a fixed relation to the phase of a "reference" signal. The predecessor to the modern phase-locked loop was first described in 1932 by Henry de Bellescise. A phase-locked loop circuit responds to both the frequency and the phase of the input signals, automatically raising or lowering the frequency of a controlled oscillator until it is matched to the reference in both frequency and phase. A phase-locked loop is an example of a control system using negative feedback. 提示：附件所在地址（https://www.ilovematlab.cn/thread-3198-1-1.html） Phase-locked loops are widely used in radio, telecommunications, computers and other electronic applications. They may generate stable frequencies, recover a signal from a noisy communication channel, or distribute clock timing pulses in digital logic designs such as microprocessors. Since a single integrated circuit can provide a complete phase-locked-loop building block, the technique is widely used in modern electronic devices, with output frequencies from a fraction of a cycle per second up to many gigahertz. PLL.gif Author: Edwin Pasterkamp 附件里的代码，里面有详细过程说明： Matlab中文论坛:   www.iLoveMatlab.cn

基于simulink的pi锁相环仿真，使用matlab r2018a版本

在sfunction中，纯C代码写的三相双同步旋转坐标系锁相环，同时输出三相电压波形和锁相环三角波形，效果很好，运行环境MATLAB2014B，请对应版本，用于学习，不可用于商业用途。打开仿真模型后，先运行mex一下C函数，再进行仿真。

Matlab锁相环仿真-Phase Locked Loop.rar 锁相环的matlab仿真 所含文件： Figure19.jpg 锁相环仿真

在逆变器的并网控制中，通过EPLL锁相环可提高对并网点电压相位信息的准确度，相对于传统的数字锁相和PLL所获取的相位角更加稳定准确不受谐波干扰