零频 meaning in English

zero frequency
zero-frequency

Hydrogenerator rotors : zero frequency of torsional vibration and resonance
水电机组转子轴系扭振零频的计算和共振分析
The thesis firstly addresses the real - time performance of spectral zoom analysis algorithms . complex modulation based zoom algorithm is a classical one of such algorithms , in which samples are modulated , decimated , filtered , spectrally analyzed and re - sorted
在这种算法里，对长采样数据复调制，把欲分析的频段的中心频率移到零频点，然后重采样、低通滤波得到欲分析的频段，再做fft分析。
Based on x - filtered lms algorithm and - filtered lms algorithm adaptive inverse control , we use a new variable step size lms algorithm . adding little computation , variable step size lms algorithm can result in fast convergence speed and low residual error simultaneously . the adaptive feedback control can counteract the beginning error of the system
在原来的x -滤波lms算法自适应逆控制和-滤波lms算法自适应逆控制方法的基础上，引入了新的变步长lms算法，在计算量增加不多的前提下，能同时获得较快的收敛速度和较小的稳态误差；引入自适应的反馈补偿控制克服了被控系统的直流零频漂移，使控制系统在初开始工作阶段快速收敛；还引入自适应扰动消除器，它能最大限度的消除扰动。