线性化理论

Therefor, it is meaningful to improve the performance of antiskid braking systems by means of parametric uncertainty nonlinear control theory, and it is the topic of this dissertation.

文中总结了参数不确定非线性系统控制理论的研究成果，特别注意到基于反馈线性化理论的控制方法是参数不确定非线性系统控制理论的一个重要组成部分。

ABSTRACT For an infinite soft ferromagnetic elastic crack material, the controlling equation for the plane problem is derived based on the linear theory of Pao and Yeh. Then it is reduced to a biharmonic equation combined with a harmonic equation.

对处于面内磁场中的含穿透裂纹无限大软铁磁弹性体，本文基于Pao和Yeh的磁弹性耦合线性化理论，通过推导，把问题的控制方程表示成一个重调和方程和一个调和方程，而得到问题的复势解。

With the help of the linearization theory and variable exchanges , the characteristic equation is derived about the steady state motion of the system .

对于系统的铅垂稳态运动，采用线性化理论和适当的变量代换导出了系。。。

This paper generalizes the result of topological linearization. The topological linearization of the system is discussed.

对非自治系统的拓扑线性化理论进行扩展，讨论了系统的线性化。

In view of a class of nonlinear singular perturbed system which can be typically evolved into two time scales, a Composed control law for trajectory maneuver is researched by applying feedback linearization, in two steps, to inner loop and outer loop.

对于一类具有典型双时标特性的非线性奇异摄动系统，应用反馈线性化理论分内环控制和外环控制两步进行了轨道机动的组合控制规律设计。

In view of a class of nonlinear singular perturbed system which can be typically evolved into two time scales, a Composed control law for trajectory maneuver is researched by applying feedback linearization, in two step, to inner loop and outer loop.

对于一类具有典型双时标特性的非线性奇异摄动系统，应用反馈线性化理论分内环控制和外环控制两步进行了轨道机动的组合控制规律设计。

For FMCW radar ,the linearity of synthesizer is critical. A novel nonlinear PLL which can be used in VCO nonlinearity compensation is presented. By using the SAW delay line to delay the FMCW signal ,the IF signal can be locked on a reference frequency after mixing the delayed VCO signal frequency and the undelayed.

微波频率合成器是雷达系统很重要的一部分，对于FMCW雷达而言，VCO的频率线性度直接影响雷达测距测速的精度，本文应用微波频率合成器的原理构造了一个用于VCO线性化的非线性PLL，并首次研究了该PLL的环路相位模型，得出了用于线性校正计算的理论公式，最后应用ADS软件对该公式做了仿真验证，结果表明该理论的正确性，为VCO的线性化提供了理论指导。

Furthermore, through the linearization model, the control laws of the aped tracking and feedback is designed and so the observer is designed and it can improve the velocity and accuracy of the speed-tracking under the condition which guaranteed the stability of the whole closed loop system.

本文正是为解决此类非线性限制问题而进行了深入的理论研究，在综合分析三相交流直线永磁同步伺服电动机非线性动态数学模型的基础上，采用反馈线性化控制理论，建立了三相交流直线永磁同步电动机速度跟踪闭环系统动态的输入—输出模型，进而通过该线性化模型设计反馈控制律、速度跟踪控制律和负载阻力扰动观测器，在保证整个闭环系统稳定的前提下，提高伺服跟踪的快速性和精确性。

Furthermore, through the linearization model, the control laws of the aped tracking and feedback is designed and so theobserver is designed and it can improve the velocity and accuracy of the speed-tracking under the condition which guaranteed the stability of the whole closed loop system.

本文正是为解决此类非线性限制问题而进行了深入的理论研究，在综合分析三相交流直线永磁同步伺服电动机非线性动态数学模型的基础上，采用反馈线性化控制理论，建立了三相交流直线永磁同步电动机速度跟踪闭环系统动态的输入—输出模型，进而通过该线性化模型设计反馈控制律、速度跟踪控制律和负载阻力扰动观测器，在保证整个闭环系统稳定的前提下，提高伺服跟踪的快速性和精确性。

And the system was assuaged base on the central manifold theorem. A fuzzy sliding-mode controller was designed for the system for better performance.

基于精确反馈线性化理论镇定了可线性化子系统，基于中心流形定理镇定了该系统的不稳定的零动态。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。