查询词典 perturbation method

In this paper,two methods,one singular perturbation and the other directly numerical solution,are used to find the solution of the stiff string of 3lst key and 59th key for a piano tone partials,with the results compared with Ray- leigh and Seeback's by regular persvrcation method and with those from dire- ct obseruation.

本文应用文献[1]结果进一步求出了59号弦的泛音频率，所得结果与实验观测值对比，其绝对误差的均方根和相对误差的均方根都远较Rayleigh-Seeback用正则摄动法算得的小。

In this method, the leading term is not the solution of the unperturbed system, it is obtained from a linearized system in a completely different way as standard perturbation methods.

提出了一种新的摄动方法——线化摄动方法，该法摄动解的主导项的确定和传统方法完全不一样，它不是未扰动方程的解，而是线化方程的解。

The sensitivity characteristics of the natural vibration frequencies and mode shapes of vibration structures with respect to mass and stiffness modifications are analysed based on the matrix perturbation method of the linear generalized eigenvalue problem.

基于线性广义特征值问题的矩阵摄动重分析公式，较为系统地分析了振动系统各阶固有振频及固有振型随结构质量和刚度的修改的灵敏度特性，得出了一系列具有重要实用意义的结论，指出了对结构进行摄动修改的最灵敏位置。

Linear Fractional Transformation is adopted to translate the control of perturbation to the control of disturbance, then cost index is augmented, and with the min-max method, a robust receding horizon control law is derived. The sufficient conditions for the existence of the control law and closed-loop stability are also presented. The result is extended to time-invariant system with an infinite horizon, and its consistence with the robust control based on the concept of Quadratic Stability is verified.

首先利用线性分式变换，将摄动系统的鲁棒控制问题转化为对扰动系统的鲁棒控制问题；然后通过对性能指标的扩展，利用min-max方法，得到了鲁棒滚动时域控制律，并给出了其存在和使闭环系统渐近稳定的充分条件，并将结果扩展到对定常系统时域无穷的的情况，指出其与现有的基于二次型稳定概念提出的鲁棒控制的一致性。

The ground state energy of the bound polaron is derived by using a linear combination operator and the perturbation method.

采用线性组合算符和微扰法，导出了量子点中束缚极化子的基态能量。

Based on the above researches, a method of generation of special ensemble perturbation for weather regime transition is studied.

进而在此基础上，针对天气环流转型的预报，研究了特殊的集合扰动产生方法。

Firstly, we study the perturbation method of Charnes.

第二，我们研究了变量有上界的退化线性规划问题。

In the paper we use the method of perturbation to find the analytical solutions of St.

论文提出用参数展开的方法去找圣维南方程的分析解；对向定常流区推进的单向波问题给出了解的一级近似和二级近似的普遍表示式；在论文的末尾还讨论了这个方法的适用范围。

According to the method of Englert, we introduce perturbation to calculate the system Hamiltonian.

我们按照Englert等人的计算方法对系统二次哈密顿项直接引入微扰即定义了一个尝试性的二次哈密顿项来进行微扰计算。

However,the physical base and initial perturbation method of ensemble mesoscale prediction is the new problem that ensemble.

中小尺度灾害天气集合预报的物理基础和初值扰动方法是集合预报面临的新问题。

The system can be widely used in belt weighing and batching process control,etc.

介绍了基于智能模糊控制的嵌入式配料系统的设计方法，对模糊PID控制过程和系统调零作了重点的讨论，同时给出了PID控制的程序流程图和系统定长调零子程序。

"I dunno," she answered,"but if you show me aroun', I'll recognize it from the lighthouse just outside the porthole."

"我不知道，"她回答说，"如果你能带我转转，我能认出来的，因为灯塔就在舷窗外。"