扰动

The research of these subjects has related to pure and applied mathematics such as algebra, geometry, operator perturbation theory, matrix anal-ysis, approximation theory, multivariate linear modeling, optimality principle and quantum physics etc.

对它们的研究涉及到基础数学与应用数学的许多分支，诸如代数学、几何理论、算子扰动理论、矩阵理论、逼近论、优化理论与量子物理等。

On the basis of this mechanism and by employing the fine estimation abilities of the auto disturbance rejection controller, an optimum seeking control system is constructed.

在寻优机构非线性改造的基础上，利用自抗扰控制器对被控对象和外部扰动实时作用量的良好观测能力，将该寻优机构用于自寻最优点控制。

This paper gives formulae of computing spatial disturbing gravity using ground data, and presents the formulae of the effect of outer gravity anomaly on the point to be computed based on the theory of Wong and Gore.

给出了由地面重力数据计算外空扰动重力矢量的公式，并根据WongandGore截断理论给出了外区重力异常对计算点影响的公式。

The inside loop is used to overcome fuel disturbance quickly, and the outside loop is used to compensate time-delay of object.

内回路采用比例积分控制，以快速消除燃料量引起的扰动；外回路采用内模控制，以有效地补偿对象的大滞后特性。

The reseach results provide that, to the sysytem of digital panoramic borehole camera, it is a effective method to detect the crack occurrence, width and length from the visible and quantitative. It is advantage to handle emptied areas throught induce fracturing caving in the roof, it is saied the induce couple technology of mining and blasting.

分析结果表明，数字式全景钻孔摄像系统可以直观可视和定量精细描述裂隙的形态，回采扰动和强制爆破诱导耦合技术，从裂隙发育、扩展以及裂隙的演化，有利于顶板围岩致裂失稳崩落，从而形成诱导崩落顶板处理空区的目的。

In this dissertation, we develop the research work of the following three aspects based on existed work.First, using the scale-invariant property of multiscale model, i.e. Markovian among scales, a method of qth-order tree-based for multiscale representation of a class of 1-D stochastic process is presented. The multiscale stochastic model is established. The representation forms of parameter matrices, such as, the state transition matrix, the disturbance matrix, the initial state and the corresponding covariance matrix are deduced in detail. The multiscale sample paths based on distinctive order tree are presented by computer simulation.

本文在已有工作的基础上，开展了以下几个方面的研究工作： 1、根据多尺度模型尺度不变性，即利用尺度间的Markov性，给出了一类1-D随机过程基于一般q阶树的多尺度表示方法，建立了相应的多尺度动态模型，详细推导了多尺度模型中的状态转移阵、扰动阵、初始状态和相应的协方差阵，并通过计算机仿真给出了不同阶树的多尺度采样路径。

Experimental results show that the sliding mode observer with extended Kalman filterhas good dynamic perfor-mances,strong robustness for the parameter variety of system and external interfere.

实验结果表明带有扩展的卡尔曼滤波的滑模观测器具有良好的动态性能，对被控对象的参数变化和扰动有很强的鲁棒性。

It is verified by simulation results that the generator and the HVDC system both can recover rapidly and work normally after the system faults or disturbance, in addition, the control has robustness to the parameter variety of power system.

仿真结果证明，在该控制方式下，当系统发生故障或者受到扰动后，发电机和直流输电系统均能快速恢复正常运行，并且对系统参数变化具有一定鲁棒性。

The propagation of laser is described by the paraxial wave equations, solved by the phase screen technique and the FFT method.

激光加热引起的气流扰动及气体介质密度变化采用完全的Navier-Stokes方程描述，以便考虑各种不同因素的影响。

In virtue of these parameters, PID arithmetic using Hebb algorithm was applied to water temperature control. It was found that water temperature was precisely under control, and in disturbed state, well dynamic performance was achieved. A new method for optimum design of PID control based on Hebb algorithm for pasteurism temperature control was showcased in the paper.

在仿真研究所得参数的基础上，运用改进的有监督Hebb学习的单神经元自适应PID算法对热水箱水温进行控制，将其精确保持在目标温度，并且使其在有扰动的情况下具有良好的动态性能。

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。