扰动法

词组短语

method of perturbation · perturbation method

与扰动法相关的网络例句 [注：此内容来源于网络，仅供参考]

For the dynamic system of discrete coupled and nonlinear three phase voltage source PWM rectifier, the cycle switch average operator is introduced to transform the discrete system into continuous and the small signal perturbation method is used to transform the nonlinear system into linear, the small signal dynamic mathematical models are set up.

中文摘要：针对三相电压型PWM整流器这个离散的、耦合的、非线性的动态系统，引入开关周期平均算子将离散的系统变换为连续的系统，应用小信号扰动法将非线性的系统化解为线性的系统，进而分析系统的小信号动态数学模型。

For the dynamic system of discrete coupled and nonlinear three phase voltage source PWM rectifier, the cycle switch average operator is introduced to transform the discrete system into continuous andthe small signal perturbation method is used to transform the nonlinear system into linear, the small signal dynamic mathematical models are set up.

中文摘要：针对三相电压型PWM整流器这个离散的、耦合的、非线性的动态系统，引入开关周期平均算子将离散的系统变换为连续的系统，应用小信号扰动法将非线性的系统化解为线性的系统，进而分析系统的小信号动态数学模型。

However, the solutions of the Cauchy problem of the nonlinear hyperbolic system generally develop singularities in finite time even if the initial data are small and smooth.For this reason, solutions must be found in the space of discontinuous functions. Therefore, one can not directly use the classical analytic techniques that predominate in the theory of partial differential equations of other types. Instead, we construct approximate solutions via the singular perturbation methods. By using the compactness of the approximate solutions, we can obtain the existence of the solutions of original system.

然而一般而言，即使是在初值很小且光滑的情况下，非线性双曲型守恒律的Cauchy问题的解在有限时间内也会出现奇异性，为此，我们必须在不连续函数空间中寻找上述问题的解，因此对这类问题的研究，我们也不可能直接利用在其它类型的偏微分方程中占主导地位的解析方法来解决问题，而是通过奇异扰动法构造近似解，由近似解的紧性得到原问题解的存在性。

For polydisperse systems at large Péclet number, we establish the systems of differential equations describing the leading term and the second term of the pairdistribution function via regular perturbation method.

针对高Péclet数情形，通过正则扰动法我们建立了决定对分布函数的微扰展开的主导项和一阶项的联立方程组，并用由此算出的对分布函数的数值解计算了系统的沉降系数。

Crystal growth; perturbation method; numerical simulation

晶体生长；扰动法；数值模拟

The identified two orders models under three different load conditions are validated by step disturbance method and self-relation function method.

对所得三种不同负荷水平下的二阶离散型水轮机模型，应用阶跃扰动法和自相关函数法进行检验。

A new method for islanding detection based on active current disturbing is proposed in this paper.

本文提出了一种新的孤岛检测方法——主动电流扰动法。

The disadvantages of the conventional active frequency drift method in various load conditions are analyzed for islanding prevention.

本文详细分析了传统有源频率扰动法在孤岛效应发生时，在不同负载特性下并网逆变器输出频率的变化特点和不足。

In this paper, the following progress has been discussed:(1) the improved conjugate gradient algorithm which combines the inversion equation;(2) the formulation for velvet gene at all directions and the approximation method of Jacobian matrics based on disturbance method;(3) the model is adjusted by analyzing the influence of damp coefficient and correction factor to inversion result ;(4) the influence of damp coefficient to the resolution of inversion is studied. to some degree, we improved the problem of "barycenter ascending shift" to electric anomalous body in 3-D resistivity inversion.

本文主要讨论了以下几个方面的内容：（1）结合反演方程式改进的共轭梯度算法；（2）基于扰动法的线源Jacobi矩阵的近似计算方法及光滑系数矩阵在各个方向上的光滑因子的计算公式；（3）通过分析阻尼系数与修改量校正量对反演结果的影响，提出了利用校正系数对模型修正量进行校正；（4）较为系统的讨论了阻尼系数λ对反演分辨能力的影响，较好的改善了三维电阻率反演中的电性异常体重心的&上漂&现象。

The stability of the interface between two-layer fiber flow is essential for getting high quality multi-formation and layer purity. Some measures of keeping the stability of interface are got from theoretical analyse. The measures is close reducing the velocity difference between two layers; putting the fiber of lower density on the upper layer and the fiber of relatively higher density on the lower layer; and using low pulsation pump as the pumping equipment.

两层叠加流动的界面稳定性对多层成形的质量及层间纯度有重要影响，本文通过采用小扰动法对流动界面的稳定性分析认为，减小层间速度差；把密度较大的纸浆置于下层，密度较小的纸浆置于上层；以及采用低脉冲泵作为上浆泵均有利于保持层间流动界面的稳定性。

与扰动法相关的网络解释 [注：此内容来源于网络，仅供参考]

culture-bound terms：文化词

上限法:upper bound method | 文化词:culture-bound terms | 扰动边界:Perturbation bound

Distributive laws：分配律

Distribution-free method, 任意分布法 | Distributive laws, 分配律 | Disturbance, 随机扰动项

method of partial fractions：部分分数法

method of iteration 迭代法 | method of partial fractions 部分分数法 | method of perturbation 扰动法

method of perturbation：扰动法

method of partial fractions 部分分数法 | method of perturbation 扰动法 | method of potentials 起脚石法

method of perturbation：扰动法;微扰法

矩量法 method of moment | 扰动法;微扰法 method of perturbation | 预报法 method of prediction

method of potentials：起脚石法

method of perturbation 扰动法 | method of potentials 起脚石法 | method of power series 幂级数法

perturbation method：扰动法

以扰动法(perturbation method)将方程组线性化. 所以观测亦显示,中纬度西风向上增大. 但由分析天气图可知,同一系统之波的相位并不因基流(basic flow)速度不同而产生不一致现象,因而,我们需要找出:就综观尺度而言,中纬度纬流非常近似地转平衡,

perturbation method：扰动法 摂動法

■ perspective transformation 透视变换 透視変換 | ■ perturbation method 扰动法 摂動法 | ■ petabyte 批比特 ペタバイト

reductive perturbation method：约化摄动法

小摄动方法:method of perturbation | 约化摄动法:reductive perturbation method | 扰动细观机制:sand perturbation mechanism

parameter perturbation technique：参数扰动法

parameter passing 参数传送 | parameter perturbation technique 参数扰动法 | parameter plane method 参数平面方法