如果只考虑磁扰动的贡献，不同值的振动模的频率变化仅只是涨落磁场能谱的函数。
For the magnetic perturbation contribution, we obtain the frequency shift of modes with different degree as a function of the spectrum of fluctuating magnetic field.
采用相关分析法模拟分析了HL 1m装置的磁扰动模式，模拟的结果同预期的结果一致。
The MHD modes in the HL-1M tokamak are simulated by correlation analysis method. The simulation results are in good agreement with expectation ones.
结果表明，在极区，压力脉冲导致的扰动传播可以区分成两类不同模式的波动；快磁声波与慢磁声波。
Numerical results indicate that, in polar region, propagating disturbances can be distinguished into two modes, i. e. fast and slow magneto-acoustic waves.
本论文首先对电力系统的各种扰动进行了概述，分析了国内外励磁控制的研究方法，提出本论文的研究目的及意义。
At first, the paper introduces the various disturbances in the power system, analyzes international exciter control research methods, presents purpose and meaning of this paper.
应用自动控制原理对同步电动机晶闸管励磁系统进行扰动后的动态分析，提出了相应的性能指标。
Applying automatic control principle to analyze dynamic operating modes of in - Phase Electromotor Transistor Excitation System, we have brought out relevant characters.
我们还发现，含有较强快波分量的扰动可从磁层顶剪切流场中获得能量而得到线性放大。
We also find that the fluctuations with stronger fast mode oscillations can gain more energy from the background shear flow and get amplified as a result.
而在赤道附近，传播扰动是快模磁声波，在源区附近还存在一非传播的扰动。
Whereas in the vicinity of solar equator, propagating disturbance is regarded as fast mode wave, and a standing disturbance is found to be located near the source region.
本文应用磁弹性波理论，提出伴随地震波传播的同时，地磁场将产生一个扰动。
Based on the theory of magneto-elastic waves, a geomagnetic disturbance accompanying the propagation of seismic waves was studied.
采用合理的发电机励磁控制方案对改善电力系统扰动稳定性有着重要的作用。
Proper program of excitation control is important in the improvement of the disturbance stability in power system.
采用合理的发电机励磁控制方案对改善电力系统扰动稳定性有着重要的作用。
Proper program of excitation control is important in the improvement of the disturbance stability in power system.
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