坐标系统

Collinearity equations through collinearity restriction to model of pinhole camera are got, and given the whole process of the optimization method based to the transform of collinearity equations.

视频测量技术用于确定三维空间物体坐标和与之相对应的二维图像坐标之间的关系[1]，对成像系统的精确定标，确定空间对应的几何关系是先决条件[2]。

At first, the examples are given to explain a new method in signal processing, in which functions are defined from the viewpoint of multi-scale analysis. Then the authors present "coordinate heft separate" method, discover self-similar structure of points set on plain area; based on this self-similar structure, construct orthogonal complete 2-value function system of high-dimension simplicity; enrich and extend the theory and application of Rademacher function and Walsh function.

首先，举例说明在多尺度分析观点下，信号处理中某些函数定义的新方法；进而提出"坐标分量分离方法"，并由此发现了平面区域上点集坐标数值的自相似结构；在揭示了如此自相似结构的基础上，构造了高维单纯形上的正交完备的二值函数系统；丰富与推广了Rademacher函数及Walsh函数的理论及应用。

In view of the demand of computerized eye-glasses-wearing system, an approach to match two dimensional (2D) human head images with 3D glasses frame graphics in 3D space has been proposed. First, the operator points out three or six key points, which are used to locate 3D eye-glasses frame, on the human face image displayed on the computer screen interactively.

论文针对计算机化眼镜配戴系统的要求，提出了一种在三维空间匹配二维人头图象和三维眼镜图形的方法，即通过人机交互方法，由操作者在显示于计算机屏幕上的二维人头图象上，指出确定三维眼镜位置的三个或六个关键点的二维坐标及其三维对应点，从而可以近似求出人面朝向及视点坐标，再用相应位置上的三维通用人头图形替换二维人面图象，计算人面和眼镜间的遮挡关系并显示，从而完成二者的空间匹配。

First, the paper reviews the development and research of AC transfer speed system, introduces the different control strategy of transfer speed system for asynchronous motor, and discusses the basic principle of vector control system for asynchronous motor in detail,including the mathematics model and coordinate transformation of asynchronous motor, the fundamental equation of vector control, the estimation method of rotor flux, the system structure of vector control etc. Then, the paper lays stress on the fundamental principle, control algorithm and realization method in TMS320LF2407 of space vector pulse width modulation technology.

本文首先简述了交流调速系统的发展和研究重点，介绍了异步电机调速系统的不同控制策略，详细论述了异步电机矢量控制系统的基本原理：异步电机的数学模型和坐标变换、矢量控制的基本方程式、转子磁链的观测方法、矢量控制的系统结构等，并重点分析了空间矢量脉宽调制技术的基本原理、控制算法以及在TMS320LF2407中的实现方法。

Since the nonholonomic constraint constrains the time derivatives of the generalized coordinates of the system and does not reduce the degree of the system configuration freedom, the number of the dependent control inputs is less than the degree of the system configuration freedom, which leads to a difficulty in controller design.

由于非完整约束是对系统广义坐标导数的约束，它不减少系统的位形自由度，这使得系统的独立控制个数少于系统的位形自由度，给其控制设计带来很大困难。

Moreover, for the treelike system with prescribed motion and the non-treelike system with closed-loop, the generalized coordinates aren't independent completely. Only the dynamical equations of the system and the constrain equations resulting from the prescribed motion and the closed-loop are combined to form DAEs, it can be solved.

另外，对于有指定运动的树系统或带有闭环的非树系统，系统的广义坐标是不完全独立的，系统的动力学方程要与指定运动或系统切断所附加的约束方程一起组成微分--代数方程组才能求解。

Conducting the regular measure system analyses of CMM machine and ensure the accuracy and of CMM checking result.

负责三坐标的测量系统分析，保证三坐标测量结果的准确性。

This paper is mainly about a three-D coordinate measurement system, which is based on intersection converge imaging principle ,using space probe .

本论文提出一种采用光学测棒的三目视觉坐标测量系统，利用交汇成像原理实现三坐标测量。

For the theory, method and technique of 3D color information collected, the method for obtaining 3D space coordinate and color information of object with active illuminated multi-channel synchro scanning is presented, and the theory and method of 3D sensor and color sensor of calibration, which is the calibration techniques of BP neural network and linear partition and the method of integrating them, is also studied. A filament calibration target for 3D color system is designed and made. And the calibration of multiple sensors and the matching of 3D space coordinate information and color information, and the automatic matching of multiple sensors are realized with cameral calibration technique presented and filament calibration target designed.

在三维彩色信息获取的理论、方法、技术方面，提出采用主动照明的多通道同步扫描方法获取被测物体三维空间坐标和彩色信息，以BP神经网络、线性分区及其组合标定技术研究了三维传感器和彩色传感器标定理论和方法，设计并研制了用于三维彩色系统的细丝标定靶，并利用所提出的摄像机标定方法和细丝标定靶实现了多个传感器的标定、物体三维空间坐标信息与彩色信息的匹配及多传感器数据的自动匹配。

To accomplish the intelligent control of the three-axis numerical control system of the boring and milling machine tool based on IPC ,the research makes good use of the intelligence sport control card PCL-839 and PCLD-782/785 card to design the control system of the three-coordinate NC machine tool with the framework of embedding NC in PC.

为实现基于工控机 IPC 的三坐标印制电路板数控钻铣床的智能控制，研究运用PCL-839运动控制卡和信号输入输出卡PCLD-782/785，采用NC嵌入PC式结构设计该三坐标印制电路板数控机床的控制系统，以实现对该数控机床的控制。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。