查询词典 numerical system

The problem of PI controller design for the multi-input and multi-output system is transformed to that of static output feedback controller design via the new state variable. As to the problem of the static output feedback, a new LMI-based sufficient condition of the controller is presented in this thesis. We can gain the multivariable PI controllers just solving one LMI inequality. The numerical example is provided to illustrate the proposed design approach. 3.The H_∞ robust control is able to solve the multivariable problem, also the control problem characteristic of the modeling error, parameters uncertainties and unknown perturbation, Its application research in the power electronics is beginning now. Considering the characteristics of the PWM DC-DC converters, a multivariable PI controllers which is based on H_∞ Performance Index is designed.

通过构造新的状态变量，可以将多输入多输出系统的PI控制器设计问题转化为静态输出反馈控制问题，利用后者的成熟理论来设计控制器；本文在问题转化后采用更为简便的算法，只需通过求解一个LMI不等式，就能求取基于H_∞性能指标的多变量PI控制器参数，实例验证了算法的有效性。3.H_∞鲁棒控制具有处理多变量问题的能力，可解决具有建模误差、参数不确定和干扰未知系统的控制问题；它在电力电子学中的应用研究刚刚开始。

The research work is an innovation to the numerical integration of multi-rigid-body system dynamic equation.

本文提出这种方法对多刚体系统动力学方程的数值积分求解是一项有创新性的工作。

It is a matter of great significance to make fast and exactly transient stability analysis for power system security and stability, the main analysis method is numerical integration.

暂态稳定性的快速正确评估，对于电力系统的安全稳定运行具有重要的意义。

This paper has realized integration of numerical simulation of cold roll forming process and roll pass CAD system.

法的弹塑性大变形样条有限条分析方法，严格地推导了计算列式，并以典型例子作了考证，结果吻合较好。

The advantage of the algorithms is shown by numerical simulation for linear time invariant system.

对线性时不变问题仿真分析验证了所有的算法公式的正确性和算法本身的优良特性，对时变参数、非线性问题仿真分析说明了这些算法公式的有效性。

In order to describe the random-like feature of chaotic signal, the statistical analysis method for discrete time chaos system is studied. A domain iterative algorithm for numerical estimation of the invariant probability distribution is presented, which is the foundation for the statistical analysis and processing of chaotic signal.

针对混沌系统的随机性特征，本文研究了离散时间混沌系统的统计分析方法，并给出了一种基于Frobenius-Perron算子的区间迭代算法用于混沌映射不变分布的数值求解，该方法在样本数较少时，仍可以获得不变分布的良好估计，为混沌信号进一步的统计分析和处理奠定了基础。

Another way to use this system is to remember the numbers in the form of a numerical keyboard.

还有一种方法就是通过数字键盘来记住这些数字。

In simple view mode, only the filename is displayed and thus each entry takes only one line of the screen:In extended view,the date of modification and size of the file are added (date and number of entries for a directory, size and free space for a drive):ShortcutsLong press on the numerical keyboard will also quickly move you to 9 predefined locations of the file system:1: C:2: E:3: Z:4: C:\Logs5: C:\Data6: C:\System7: E:\8: E:\Data9: E:\SystemThere is currently no way to modify customize these locations but we plan to introduce this in the future.

在简单的视野模态中，只有文件名被显示和如此每个进入拿只有荧屏的一条线：在广大的视野、修正的日期内和文件的大小被增加(日期和进入的数字为一个目录，大小和自由的空间为驾驶)：ShortcutsLong 杂志报纸在数字的键盘上也将会很快地移动你到文件系统的 9个被预先定义的位置：1： C：2： E：3： Z：4： C：\ Logs 5： C：\ Data6： C：\ System7： E：\8： E：\ Data9： E：\ SystemThere 是现在没有方法修正定制这些位置但是我们计划未来介绍这。

It has been developed to be a cross-subject of numerical and applied mathematics and system science.

声波散射反问题是一类典型的数学物理反问题，在无损检测、医学成像、遥感、雷达、声呐、石油、地矿和海洋探测等领域都有着广泛而重要的应用空间，迄今已发展成为融合计算数学、应用数学和系统科学的具有交叉性的热门学科方向，对其计算方法的研究正吸引着国内外众多学者的浓厚兴趣。

The results show that this numerical model is helpful for design optimization and system simulation.

计算结果表明，文中建立的数值计算模型对于喷淋塔的优化设计具有指导意义，同时也可应用于系统仿真。

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。