Using mulitaper bispectrum estimation analysis the phenomenon of nonlinear phase coupling between fault feature frequency and fundamental harmonic, Realize the recognition of the weak fault feature under the strong signal characteristics.
针对故障特征频率与基波之间存在非线性相位耦合的现象,利用多窗双谱进行二次相位耦合分析,实现了强信号特征下弱故障特征的识别。
参考来源 - 基于多窗高阶谱电机轴承故障检测方法研究·2,447,543篇论文数据，部分数据来源于NoteExpress
A model for confirming this infiltration field is presented by soil, water and atmosphere three-phase coupling.
将土-水-气三相耦合，提出了一种确定降雨入渗后的暂态渗流场的模型。
In this paper, instead of using the bispectrum to detect the quadratic phase coupling, a new method based on -dimension spectrum is developed.
本文在原有利用双谱对二次相位耦合进行分析的基础上，提出了维谱分析方法。
Simulation study on the movement of particles at Lagrangian coordinates in a cyclone separator was made by phase coupling random trajectory model.
采用相间耦合随机轨道模型，在拉格朗日坐标下对旋风分离器内颗粒的运动进行了模拟研究。
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