An algorithm based on the magnitude and phase Angle of the generalized phasor to measure instantaneous frequency and swing frequency while the power swing occurred is presented.

提出了一种基于综合相量幅值和相位变化规律实时测量电力系统振荡中振荡频率及瞬时频率的算法，利用三相电流经相应变换获得综合相量。

youdao

The PLL system could obtain basic component of the input, track the instantaneous phase of basic component, and output instantaneous Angle frequency.

该方法通过一个改进锁相环系统实时跟踪输入信号的基波瞬时相位，输出基波瞬时角频率，进而得到输入信号的基本频率估计。

youdao

Three features parameters derived from the instantaneous amplitude, instantaneous phase, instantaneous frequency and power spectrum of analogue modulated signals are presented in this article.

首先介绍从信号幅度、相位、频率及功率谱等特性中提取的三种特征参数，应用这三种参数采用人工神经网络对模拟调制信号进行了识别。

youdao