查询词典 coordinate transformation

Under the assumption that a differential Riccati equation is solvable, an exponential reduced-order observer is developed by means of coordinate transformation and the gain matrix of the proposed observer depends on the solution of the differential equation.

在一微分Riccati方程有正定解的前提下，通过坐标变换方法对该类系统提出了一种指数型降维观测器设计方法，该观测器的增益矩阵取决于微分Riccati方程的正定解。

On the basis of nonlinear coordinate transformation and exact linearization method, feedback stabilization and output tracking problem are solved.

再利用非线性坐标变化和精确线性化方法进行控制器设计，以达到反馈稳定化和输出跟踪目的。

Distribution of the field fixed up at will can be calculated by the application of the charge substitution method accompanied with suitable coordinate transformation.

应用电荷模拟法及适当的座标变换，可以算出任意布置的三维电场分布。

The algorithm tracks the changing rate of each coordinate transformation parameter through Kalman filter to facilitate better prediction of the initial searching point. More importantly, the powers of the noise models of the Kalman filter are effectively estimated online rather than making artificial assumptions on their values. The algorithm can hence adapt to various target motions and searching precisions in a real-time manner without any manual intervention.

该算法通过对坐标变换参数的变化率进行Kalman滤波来更好地预测初始搜索点；更重要的是，该算法有效地在线估计Kalman滤波器中的模型噪声功率，而非先验地对它们的取值做出假设，因而能够在没有任何人工干预的情况下动态地根据不同的目标运动状况和搜索精度进行实时调整。

Based on IAU2000 resolutions,the related matters of the coordinate transformation between CRS and TRS is studied.

基于IAU2000的有关决议，重新研究了CRS和TRS之间转换的有关问题，主要内容包括：天球历书极目前存在的问题和天球中间极的引入；非旋转原点、天球历书原点和地球历书原点的基本概念；基于春分点和NRO的坐标转换模型以及其中的有关参数的确定。

Based on the vector module's characteristics of invariance of translation and rotation coordinate transformation,a new fragment matching method is brought forward.

根据向量模在平移、旋转等坐标变换中具有不变性的特征，给出了一种新的碎片匹配算法。

Firstly, this article in view of the CATIA CLSF, elaborated this software post-processing way, the operating mode of the three principles, and has given the explanation to this software overall constitution; Secondly, after having analysised and researched thoroughly how the CATIA/CAM module creates the APTSOURCE file and its format, the rules of CNC milling machining center MODIMILL 4L, FIDIA PowerXP20system and the coordinate transformation of the machine tool, we programmed the code of CMSPP special post-processing software and compiled the interface based on the dialog box pattern which the fine outward appearance, is easy to operate; Finally, from machining practice, the NC program by the post-processing program can be run in the machining center to machine the part.

首先，本文针对CATIA刀位文件的特点，提出了该软件的后处理方式以及软件运行的三条原则，并对该软件的总体构成作了阐明：其次，本文对CATIA／CAM模块生成的APTSOURCE文件格式、FIDIA PowerXP20数控系统的规则以及MODIMILL 4L铣削加工中心坐标转换数学模型进行了深入的分析与研究，在此基础上用VC++6.0语言编写了CMSPP专用后处理软件的算法代码，并且基于对话框模式编写了外观精美、易于操作的功能界面；最后，通过实例验证表明：开发的后置处理软件所生成的数控加工程序能够在加工中心上运行并能进行有效地加工。

From Maxwell's equations, with material constitutive relation of optically active crystal and boundary conditions of electric field on the boundary between isotropic media and crystal, through coordinate transformation, the formula of the direction of refracted wave for arbitrary direction incident monochromic plane wave was derived. Furthermore, based on the unit vector of direction of refracted wave, eigen waves of electric field, electric displacement vectors and direction of energy flow can be easily obtained.

从麦克斯韦方程组出发，结合旋光晶体的物质方程以及单色平面波从各向同性介质入射到晶体界面时电场的连续性边界条件，通过晶体主轴坐标系和界面坐标系的坐标变换，推导了任意入射方向的单色平面波在晶体界面上的折射方向的求解公式，进而利用所得的折射方向求解晶体中折射波的电场本征模、电位移矢量本征模和光线方向。

With the state-of -date computer-aided control technology,in which the coordinate transformation and retransformation,the digital calculation and filtering/regenerative compensating calculation are carried out,the compound control-tracking system with regenerative feedback is built up and the high-precision tracking to high-speed moving objects is finally realized.

为提高伺服系统跟踪精度，利用现代计算机辅助控制技术，用软件进行坐标变换与反变换、数字计算与滤波和再生补偿量的计算，构成具有再生反馈的复合控制跟踪系统，最终实现对高速运动目标的高精度跟踪。

Firstly, this paper based upon coordinate transformation in vector space, the resolution principles of ship's swinging in three rotative axes of a hull – mounted array sonar are developed. The analytical results are used as the rules to control and stabilize the attitude of the array sonar so as to isolate the swinging of the ship.

本文首先根据矢量空间坐标变换的原理，分析了船舶摇摆运动在声纳基阵转动轴上的分解原理，得出了控制和稳定声纳基阵姿态不受船舶摇摆影响时所需的控制规律。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐