查询词典 perturbation method

Because of the universal existence of parameter perturbation and the fault ineluctability for actuator and sensor, it is more important and practical to study robust fault-tolerant control of parameter perturbation for linear system with time-delay.

由于参数扰动的广泛存在性以及执行器和传感器发生故障的不可避免性，使得研究具有参数不确定的时滞系统的鲁棒容错控制问题具有更重要的现实意义。

The optimization problem with linear inequalities can be solved by Quadratic Programming. The simulation results show that the design improves the dynamic performance and suppress torsional vibration causing by rolling perturbation. The model predictive control suppresses rolling perturbation.

仿真结果表明，采用具有约束条件的预测控制策略的控制系统对轧机传动系统的控制效果在动态性能和抑制扭振效果上明显优于传统PI控制，可以较好的抑制轧制扰动对传动系统产生的影响，对解决轧制扰动鲁棒性控制问题是一种有效的解决办法。

In this chapter the model of minimal perturbation constraints nonlinear programming is established, and the concept of the minimal perturbation efficient solution is introduced.

在研究模型中的较多约束集的结构表示的基础上，给出了较多约束最优解要满足的Fritz John条件和Kuhn-Tucker条件。

This paper introduces the concept of minimal perturbation efficient solution in minimal perturbation constraints programming.

文中引进了极小扰动约束规划的极小扰动有效解概念。

In chapter four, we developed a direct approach for soliton perturbation based on the Green function, This approch get rid of the proof of orthognality for eigenfunctions in a direct approch for soliton perturbation developed by Yan Jiaren etal.

第四章，发展了一种基于格林函数的孤子微扰理论，克服了颜家壬教授微扰直接法中本征函数正交性证明的困难。

The perturbation signals were embedded in a chaotic attractor on the inputs of parameter perturbation model.

用该扰动信号，将嵌入在混沌吸引子中不稳定周期轨道镇定到稳定的不动点处。

Perturbation theory in physics and engineering technology have been widely used, known as perturbation theory.

摄动理论在物理学和工程技术上也被广泛采用，称为微扰理论。

The exact invariants of the symmetry for the system without perturbation are given. Perturbation to weakly Noether symmetry is discussed and the adiabatic invariants of the perturbed system are obtained.

给出了未受扰动系统的弱Noether对称性导致的精确不变量，讨论了受扰动后系统弱Noether对称性的摄动，并得到受扰动后系统的绝热不变量。

By applying these two tools,we mainly discuss the problems as follows:1 Perturbation identities for the generalized polar decomposition:By applying singular value decomposition, we study the perturbation bounds of the generalized polar decomposition under unitary invariant norms when A is perturbed by addition or multiplication,respectively and give our bounds in identities.2 A class of new unitary invariant metrics: This paper generalized a class of new unitarily invariant metrics and give the upper-bounds and lower-bounds by C-S decomposition.

利用这两个强有力的工具，本文主要讨论了如下问题：1 矩阵广义极分解的扰动等式：利用奇异值分解，本文分别讨论了加法扰动和乘法扰动下矩阵广义极分解在任意酉不变范数下的扰动界，并首次以恒等式的形式给出了酉极因子和半正定因子的扰动界。2 一类新的酉不变度量：本文推广了文[22] 中的结论，定义了一类新的酉不变度量。

PID controllers based on the interval polynomial stabilization theorem;2. Not only the H ∞ norm calculating guestion of the robust stability of the mixed-type perturbation in the interval polynomial family is studied, but also the range which can be done is enlarged to that of the more general linearly dependent cofficients perturbation.

本文讨论了不确定性系统的鲁棒稳定性分析问题，不仅研究了区间多项式族混和摄动的鲁棒稳定性中H∞的计算问题，而且将研究的范围从区间多项式族扩展到更具一般性的线性相关系数摄动的系统，以值域断面的几何性特为基础，提出了一种形象直观，简便实用的混和型摄动系统鲁棒稳定性的分析方法。

If you were not , and OS X just booted normally, have no fear.

如果你没有，和OS X刚刚启动通常，没有恐惧。

I only want to preserve our all .

我只想保存好我们的一切