Nyquist criterion

A Study of Shannon Sampling Theorem and Nyquist Criterion

采样定理与奈奎斯特准则的研究

We put forward a new image registration method based on the Nyquist criterion and phase correlation method which has good performance on anti-noise . It estimates parameters only based on aliasing-free parts in low resolution image .

在抗噪声性能好的频域相位相关方法的基础上，结合奈奎斯特准则，提出了一种新的，只对频域未受混叠影响的部分进行参数估计的配准算法。

Research on Applying of Nyquist Criterion in Particular Cases

关于Nyquist判据特殊应用的研究

Interpolation function and interpolation method based on Nyquist criterion for PAL signals

基于Nyquist准则的PAL信号内插函数及插值方式

On Nyquist Criterion Used in Bode Plot Judging the Control System Stability

Bode图上应用Nyquist判据判稳方法的讨论

Its dynamic stability is analyzed by Nyquist criterion .

根据该系统模型，利用奈魁斯特判据分析了智能阀门电液执行器的动态稳定性。

The Extension and Application of Nyquist Criterion to Multi-Input-Multi-Output System

关于奈魁斯特准则在多输入、多输出系统中的推广应用问题

Determining Stability of Non-Unity Feedback Systems by Using Nyquist Criterion

奈奎斯特判据判断非单位反馈系统的稳定性

There will be faults if the system loses its stability through analyzing system response function with Nyquist criterion .

通过Nyquist稳定判据分析系统频响函数，如果系统不稳定，将有故障存在。

After introducing a parameter β, it is proved that the filter still satisfies the first Nyquist criterion .

引入滚降系数β之后，证明了成形滤波器仍满足Nyquist第一准则。

Then , the design of self oscilating electronic ballast using control tools such as description function , extended Nyquist criterion has been carried out .

运用描述函数法和推广的奈魁斯特稳定判据等工具设计了一个36W自激LC串联谐振并联负载型电子镇流器。

Based on the general Nyquist criterion and Lyapunov method in the control theory , the stability of the Internet congestion control algorithms ( ICCA ) is analyzed .

利用控制理论中的广义Nyquist判据和Lyapunov方法，对算法的稳定性进行了分析。

For this generalized input , Nyquist criterion can be used to determine the stability of a multi - input - multi-output system as in a single - input system .

对于这一广义输入量，可以象单输入系统那样应用奈魁斯特准则来判别系统的稳定性。

Through investigating the frequency characteristic of fractional order control systems , Nyquist criterion and logarithmic-frequency criterion are presented to find out the stability of fractional order control systems .

本文通过考察控制系统的频率特性，提出利用Nyquist判据和对数频率稳定判据来判断分数阶控制系统的稳定性。

Starting directly from the argument principle of complex analysis , two efficient stability criteria are deduced for fractional order linear time-invariant systems : Nyquist criterion of fractional systems and logarithmic-frequency criterion of fractional systems .

直接从复分析中的辐角原理出发，推导出分数阶线性定常系统2个有效的稳定性判据：分数阶系统奈奎斯特判据和分数阶系统对数频率判据。

In order to investigate the influence of the communication delays on the quality of service ( QoS ) of the Internet , the stability of an AQM algorithm with communication delays is studied by applying the general Nyquist criterion .

为了调查通信时延对Internet服务质量的影响，借助广义Nyquist判据研究了具有通信时延的AQM策略的稳定性。

The algebraic equations for computing the Hopf bifurcation are obtained . In Chapter three , the direction and stability of the bifurcating periodic solutions are determined by the Nyquist criterion and the graphical Hopf bifurcation theorem .

在第三章，利用奈奎斯特准则和Hopf分岔图示定理分析上述两个模型的Hopf分岔方向与分岔周期解的稳定性。

According to Nyquist criterion , interpolating function for PAL signals is derived and TV image reproducing quality in the conventional television system is discussed . An interpolating method used to improve TV image quality is presented . The interpolating principle and filtering characteristic are mathematically analyzed .

根据Nyquist准则，导出PAL信号的内插函数，并按此准则讨论常规电视系统中图像的重现质量，建立一种改善图像质量的插值方式，对其插值原理和滤波特性进行了数学分析。

The Method of Gaining Nyquist Third Criterion Response Function

奈奎斯特第三准则响应函数的求取方法

The stability of a linear system can be determined in the frequency domain by utilizing Nyquist stability criterion .

Nyquist判据是频域中判断系统稳定性的判据。

The Nyquist stability criterion judges the closed - loop systems ' stability , according to the system 's open - loop frequency characteristic .

而Nyquist稳定判据则根据系统的开环频率特性判断闭环系统稳定性。

Moreover , the dissertation presents a stability analysis for the TCP / LRED ( Loss ratio based Random Early Detection ) delayed feedback system by the classical Nyquist stability criterion .

此外，运用经典的Nyquist稳定性判据，给出了TCP/LRED（LossratiobasedRandomEarlyDetection）互联系统的稳定性条件。

Based on the Nyquist stability criterion , the infinite limit to the control parameter is simplified into a finite limit so as to find the stabilizing set of the P controller easily .

该算法基于Nyquist稳定判据，将控制参数的无限约束转化为有限约束，从而能够容易地确定P控制器的稳定参数集。

Based on the Nyquist stability criterion and the parametrization of simultaneously stabilizing controller , the ∞ norm simultaneous stabilization performance design problem of a family of SISO stable minimum phase plants is discussed .

基于奈氏（Nyquist）稳定性判据和同时镇定控制器参数化结果，对一类SISO稳定最小相位被控对象同时镇定∞范数性能设计问题进行了讨论。

According to the comparison between the GFS and the FSN , which is a non-linear optimization procedure based on the Nyquist stability criterion , the focus of the analysis is put onto the instability effects caused by the milling force level and the radial cutting constants .

在考虑了主轴陀螺效应的基础上，着重分析了切向铣削力参数和径向铣削力参数对铣削系统稳定性的影响，比较了广义傅里叶级数法与基于奈奎斯特稳定性判据的非线性优化法的结果。

According to the Nyquist stability criterion , eigenvalue theory and LQR control theory , the calculating formulae for time-delay of the structure-modal active control system with displacement-velocity feedback have been derived . Next , the maximum allowable time-delay of the structure-modal active control system can be calculated .

根据Nyquist稳定性准则、特征值原理和LQR控制原理，导出了结构模态主动控制系统的位移速度反馈的时滞计算公式，进而可求得结构模态主动控制系统的最大允许时滞。

Then , the transfer function that equivalent to Nyquist 's second criterion is constructed .

最后构造了满足奈奎斯特第二准则的等效传输函数。

A method applying the generalized Nyquist diagram the accurate application of Nyquist stability criterion of Bode diagram

广义复面曲线的一种应用方法准确运用伯德图中奈奎斯特稳定判据