研究了电力系统在周期和准周期扰动下的次谐和混沌轨道。
This paper investigates the orbits of sub-harmonic and chaos in power system under periodic and quasi-periodic perturbation.
提出了压电梁对缓变周期扰动振动环境的多输入多输出振动抑制方法。
A multiple input and multiple output control approach is presented to suppress the vibration of the beam subjected to a slowly changing periodic dynamic turbulence.
该多周期扰动力矩与转台三轴转速有关，影响转台的定位精度、位置精度和速率精度。
The multi-period disturbance torque is related to three-axis rotate speed of turntable and influences localization precision, position precision and speed precision of turntable.
为在压气机整机进入深度失速前检测到失速起始信号，提出了一种基于平均数值差分的短周期扰动检测方法。
To detect stall inception signal before the whole compressor running into deep rotating stall, a method based on averaged numerical difference is developed to detect short length scale disturbance.
通过对单模激光混沌系统增加一个周期扰动，构造一种具有外部周期扰动的新动力学系统，基于数值法研究了系统的混沌态在周期扰动下的动力学行为。
Based on single mode laser system, a new dynamical system under external periodic perturbation modulation is constructed and investigated by using of the numerical analysis method.
本文针对高精度转台恒速工作状态时存在的位置相关周期非线性扰动，提出了一种闭环迭代学习算法。
A current cycle iterative learning algorism is presented in this paper for the periodic position relevant nonlinear disturbance in the constant speed state of turntable.
针对高精度转台恒速工作状态时存在的位置相关周期非线性扰动，提出了一种闭环迭代学习算法。
A current cycle iterative learning algorism is presented for the periodic position relevant nonlinear disturbance in the constant speed state of turntable.
作者研究了在周期性负荷扰动下电力系统安全盆的分形侵蚀，通过数值仿真给出了不同的扰动值对安全盆的侵蚀程度。
The fractal erosion of safe basin in a power system disturbed by a periodical load is studied, and the erosion extent induced by different disturbance values is numerically analyzed.
分析了电力系统在周期性负荷扰动下的振荡失稳问题。
The power system instability caused by oscillation under periodical load disturbance was analyzed.
数值模拟发现，在脉冲传输距离与扰动周期长度的关系中存在着一种多极值结构。
We numerically show that there are many extremums in dependence of the propagation distance on the period lengths of perturbation.
利用正比于系统变量的周期脉冲扰动法对其混沌进行控制，得到较好的控制结果。
Good controlling results are gotten by using periodic pulses disturbance method proportioned with system variable to control the chaos.
特别是短周期的地磁异常变化与地震发生前后的地磁扰动密切相关。
It is closely relationship between the short period geomagnetic anomalies and disturbance before and after the earthquake.
在不计扰动的情况下，在具有年周期的太阳短波辐射的作用下，逐渐建立起下垫面纬圈平均温度梯度及基本气流。
In the absence of disturbances the surface temperature and basic currents are gradually set up by the excitement of solar radiation with an annual period.
按照奥地利学派的理论，货币是非中性的，货币的扰动改变了生产的时间结构，最终导致了经济的周期波动。
Modern Austrian school emphasize the unneutrality of money, the disturbance of money change the time structure of production, and lead to economic cyclical fluctuation.
提出未扰动系统出现多重周期解的条件，并给出了一些特殊方程零解的具体重数作为应用；
First, some conditions for the existence of a multiple periodic solutions are given and the multiplicity problem for zero solution of some concrete equations is investigated as applications.
所考虑的非线性扰动力矩是角位置的周期函数，这在实践中是很常见的。
The disturbance torque dealt with is assumed to be periodic in position, which is very common in practice.
结果表明：啁啾光脉冲的振幅调制深度和相位扰动深度越大，则压缩后的光脉冲对比度越小；啁啾光脉冲的振幅调制周期和相位扰动周期越小，则压缩光脉冲的预脉冲宽度越大。
The simulations show that more amplitude modulations and phase perturbations lead to lower contrast of the compressed pulse, and bigger modulation cycle results in wider pre-pulse width.
为跟踪或抑制仅周期已知的未知周期参考或扰动信号，提出一种新的重复学习控制方法。
A novel repetitive learning control method is proposed for the tracking or rejection of unknown periodic reference or disturbance with a known period.
利用耦合模理论分析了在双锥光纤耦合区中声光的相互作用，讨论了在不同耦合区半径下扰动周期与声波频率的关系。
The acoustooptic interaction in biconical optical fiber was analyzed based on coupled mode theory, and the relationship between perturbation period and flexural wave frequency was discussed.
研究表明波状界面和涡街是由界面处的剪力流速度分布和周期性扰动所造成的。
The results show that the wavy interface and vortex street are caused by the velocity distribution of shear flow and periodic disturbance at the interface.
电力系统强迫功率振荡为持续的周期性小扰动所引起低频振荡现象。
Power System forced power oscillation is a kind of low frequency oscillation caused by persistent periodic small disturbance.
应用奇异性理论研究了电力系统在周期性负荷扰动下的静态分岔现象。
The static bifurcation in electric power system under periodical disturbance is studied with singularity theory.
仿真结果表明，该方法对周期性扰动具有良好的抑制效果，对过程参数的变化具有很强的鲁棒性。
It is shown by simulations that this control strategy can achieve good disturbance rejection performance to periodic disturbances, and is more robust against process parameter variations.
提出了一种混合形式的鲁棒重复控制方法，来抑制转台速率系统中存在的位置相关周期性扰动。
A hybrid robust repetitive control scheme is presented to reject position relevant periodic disturbance in rate system of turntable.
最后，通过数值模拟阐明系统在周期脉冲扰动下的复杂性。
Lastly, use the numerical simulation to illustrate the complexity of the system resulted from the periodic impulsive perturbation.
三波共振相互作用低频振荡周期与初始扰动振幅有很强的相关关系；
The low-frequency fluctuation periods and the initial amplitudes have close relationship in the resonance interaction.
对于相同的初始扰动振幅，随着波数的增加，低频振荡周期缩短，三波逐渐变得不稳定，三波之间较强的相互作用时间缩短。
For the same initial amplitudes, the periods are becoming short, the three waves are gradually becoming instability, and the time of strong interaction is shorting with increasing of wave Numbers.
对于相同的初始扰动振幅，随着波数的增加，低频振荡周期缩短，三波逐渐变得不稳定，三波之间较强的相互作用时间缩短。
For the same initial amplitudes, the periods are becoming short, the three waves are gradually becoming instability, and the time of strong interaction is shorting with increasing of wave Numbers.
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