spll

Based on the transformation of synchronous coordinate transformation and SPLL , this paper proposes a single-phase voltage sag detection method .

本文基于同步坐标变换及软件锁相环（SPLL），提出了一种单相电压凹陷检测方法。

The corresponding signal passed mixer , bus transmission , the SPLL calculation and the frequency of fest control bus to transmit time .

相关符号经过混频器、总线传输、软件锁相环计算及频偏控制字总线传输时间。

This method replaces the SPLL integral part of the complex to simplify the implementation method .

该方法取代了软件锁相中复杂的积分环节，使实现方法简化。

The SPLL consists of calculation frequency error , updating loop middle variable , and output control signal .

该锁相环由计算频率误差、更新环路中间变量、输出控制信号组成。

The software system including the main system program , the interrupt service program and the SPLL program is introduced by Flow chart .

同时完成了基于整套硬件系统的软件设计，包括主程序、中断子程序以及软件锁相环的程序设计等，给出了相应的程序流程图。

SPLL simulation of the frequency-measurement project in a unified S-Band TT & C system

统一S波段测控系统中软件锁相环的测速方案仿真

Analysis on the Nonlinear-property of Two-order SPLL based on Matlab

基于Matlab的二阶取样锁相环非线性分析

A high speed & high precision speed control system for inertia momentum wheel based on DSP and software phase lock loop ( SPLL ) is presented .

研究了基于DSP和软件锁相环算法的惯性动量轮用高速（最高转速30000r/min）高精度转速控制系统。

A software phase-locked loop ( SPLL ) implemented by DSP is designed , and the designing method of the SPLL regulator is proposed .

设计了适用于本系统的数字锁相环，且针对锁相环系统的特点设计了调节器。

The simulation of SVPWM , SPLL , PV grid-connected control strategy is researched by MATLAB , and the rule of PI controller is also summarized .

利用MATLAB对空间矢量的调制算法、软件锁相算法和并网运行控制策略进行了仿真，总结了PI调节器的整定规律。

The software phase-locked loop ( SPLL ) technology in the steady speed control of permanent magnet brushless DC motor ( BLDCM ) in gyro was discussed .

研究了软件锁相环技术在陀螺用无位置传感器无刷直流电机稳速控制系统中的应用。

For the drawbacks of the two SPLLs , a kind of improved SPLL based on frame transformation is proposed , and the principle of the SPLL is analyzed .

因此，针对该情况，提出一种基于坐标变换的改进型软件锁相环的电路结构，并分析了其工作原理。

The delay filter was added in A / D module of Channel 2 . The corresponding signal passed mixer , bus transmission , the SPLL calculation and the frequency of fest control bus to transmit time .

在通道2的A/D模块前加延迟滤波器。相关符号经过混频器、总线传输、软件锁相环计算及频偏控制字总线传输时间。

At the part of software , the program flowcharts of three kinds of SPLL are designed and based on the C Language , the programs are writed . At the part of hardware , the sampling circuit , conditioning circuit and D / A circuit are designed .

在软件部分，本文绘制了三种软件锁相环的程序流程图，并且编写了相应的C语言程序，在硬件部分，设计并制作了锁相环输入信号的采样电路、调理电路和D/A电路。