一种基于二阶广义积分的正弦振动信号相位求解方法

A phase solution method of sinusoidal vibration signal based on second order generalized integrator

针对正弦振动信号的相位求解问题,文章利用二阶广义积分对信号精确跟踪的优势,实现对正弦单信号的相位、双信号的相位差进行求解。首先,以旋转机械为例对正弦振动信号的相位问题进行分析;其次,结合带预滤波器的二阶广义积分-锁频环与相位的定义,设计了一种求解正弦振动信号相位的方法;最后,结合算例针对单信号的相位及双信号的相位差进行仿真计算,验证了本文相位求解方法具有较好的精确性。

To solve the phase difference problem of sinusoidal vibration signals,this paper utilizes the advantage of second order generalized integration for accurate signal tracking to solve the phase of single and the phase difference of dual sinusoidal signals.Firstly,taking a rotating machine as an example,the phase problem of sinusoidal vibration signals was analyzed.Then,combining the definition of second order generalized integrator frequency locked loop with prefilter and phase,a method for solving the phase of sinusoidal vibration signals was designed.Finally,a numerical example was used to simulate the phase of single and the phase difference of dual signals,which verifies the accuracy of the phase solution method in this paper.