查询词典 perturbation parameter

An approach to controlling chaos with linear-quadratic regulator is proposed according to the idea of OGY method, which is based on the linear analysis and control of the dynamics of the system in a Poincare section with parameter perturbation.

从OGY方法的参数微扰混沌控制思想出发，提出了基于线性二次型最优调节器的混沌控制方法。

Fourth, we have developed a new hybrid control strategy by combining state feedback and parameter perturbation for controlling period-doubling bifurcations and chaos in discrete nonlinear dynamical systems.

4提出了参数调节和状态反馈的混合控制新方法，有效地实现了离散非线性系统的倍周期分岔控制和混沌控制。

Control chaos ; targeting chaos ; optimal feedback control ; parameter perturbation

控制混沌；引导混沌；最优反馈控制；参数扰动

A hybrid control strategy using both state feedback and parameter perturbation is applied to control the chaotic orbits embedded in the stroboscopic model in order to stabilize it to an equilibrium point.

采用一种既包含状态反馈又包含参数摄动的混合控制策略来控制频闪模型的混沌轨道，将其稳定到不动点。

In chapter Ⅰ, a historial review of structure control is given; In chapter Ⅱ, A discussion of the controllability and observablity of flexible structures is given, Two kinds of controllability and observablity index are defined, and applied to actuator allocation; chapter Ⅲ considers the reduction of high order flexible structure mode; the content of chapter Ⅳ is about the basic problem of distributed parameter control system design. It is proved that a stable controllor in mode space may be unstable in real use in distributed paramater systems, also, by closed loop mode concept, a pole assignment method of flexible structure controllor design is given; chapter Ⅴ is about the low-authority controllor design, it is pointed out by use of high order eigenvalue/eigenvector perturbation, a better controllor can be designed; chapter Ⅳ considers flexible structure reduced order control; chapter Ⅶ disscusses the basic problem of flexible structure computer control, analyses discreate controllablity and observablity and its computing, the sample period and coefficient wordlength; chapter Ⅷ is on the problem of low flexibility compensation; chapter Ⅸ is a design example.

在第一章简要回顾了挠性结构控制的历史，并且指出控制中的一些问题；第二章讨论了挠性结构的能控性与能观性，定义了两类能控性程度和能观性程度指标，还将能控性程度概念应用于执行器位置的确定；第三章论述了高阶模型的降价问题，比较了适于挠性结构模型降阶的方法，指出其适用范围；第四章内容是分布参数系统设计的基本问题，首先证明在模态空间中设计的稳定的控制器在实际分布系统上可能是不稳定的，进而根据闭环模态的概念，获得挠性结构控制器设计的极点配置方法；第五章的内容是关于低权控制器的设计问题，指出利用特征值高价摄动和特征向量的摄动，可以设计出更加完善的低权控制器；第六章讨论挠性结构降阶控制问题；第七章讨论挠性结构计算机控制的基本问题，分析了时间离散化模型的能控性和能观性及其计算问题，讨论了采样周期选择和系数字长问题；第八章讨论低挠性结构的补偿问题；第九章的设计例子用来说明第二章和第四章的结果。

This method not only combines the best features of balanced truncation and singular perturbational method, but also reduces the possibility of physical un-realization of the reduced model obtained from generalized singular perturbation method, according to a parameter chosen in the model-order reduction process.

新算法在广义平衡奇异摄动法降阶过程中引入一个实参数代替矩阵，不仅集成了平衡截断法和奇异摄动法的优点，而且减少了计算量，大大缓解了利用广义奇异摄动法得到的低阶系统可能面临的无法实现的问题。

Especially the system transient performance remained unchanged during a large perturbation of the stability sensitive parameter from the rated value XL0 to 400%XL0, which it is impossible for ordinary exciters.

尤其是当系统稳定性敏感参数在由标称值增大至400%的范围内摄动下，系统的稳定性及过渡过程波形基本不变，这是一般方案难以达到的。

At the same time, we introduce a unified chaotic system with single parameter,called Lorenz system families, which contains the Lorenz and the Chen systems as two dualsystems at the two extremes of its parameter spectrum, and acritical system as a transitionsystem.

同时，提出了一个单参数的统一混沌系统--Lorenz系统族，它包含Lorenz系统和Chen系统作为参数区间的两个极端系统，临界系统作为一个过渡系统。

In addition, the transformation formulas among many classes of baseline position parameter solution is deduced, and the relation formulas among precisions of many classes of baseline position parameter solution is also deduced in this section.

另外，还推导出了各类基线位置参数解之间的换算关系公式，以及各类基线位置参数解精度之间的关系公式。

In this paper, the group additive method of repeated unit is used to calculate the solubility parameter of alkyd resin from its oil length. Equations of three dimension solubility parameter of alkyd resin calculated from its oil length are derived.

本文采用重复单元基团加和法计算了醇酸树脂不同油度的溶度参数，进而整理出一组随油度改变的醇酸树脂的二维溶度参数的方程式。

We are forbidden from giving money to these shoeless, skinny children, as this will perpetuate begging.

向光着脚，骨瘦如柴的孩子施舍是不可以的，因为要招来无休无止的乞讨。

It would be hard not to fall victim to some sharpeyed policeman.

要想不被某个目光锐利的警察抓到，谈何容易。