Through the analysis of the map coordinate, this paper introduces the coordinate conversion method and the graph-calling method of the GPS locating information displayed on the map in computer. It is simple, fast and unlimited by areas. 通过对地图座标的分析,介绍了在计算机上显示的地图中,显示GPS定位信息的座标转换方法、图形调用方法,并结合实际进行了分析。
The formula for area of triangle on ellipsoid by means of geodesic coordinate is derived in this paper. 推导出用三顶点的测地坐标计算地球椭球面上三角形面积的公式。
A rainstorm course of northeast China in august 1998 is studied using the predictive results of a η-coordinate rainstorm model in this paper. 利用一个η坐标暴雨模式的预报结果,研究了1998年8月的一次东北暴雨过程。
Using grey prediction and coordinate tracking, this paper sets up a dy-namic grey prediction model for a ship. 采用对舰艇运动的坐标跟踪法,应用灰色预测技术,建立舰艇的灰色预测动态模型。
Based on the principle of the similarity of stress tensor in different coordinate systems, this paper focuses on the program method of computing principal stress& principal stress direction under different stress state with VC++ and MATLAB engine. 基于应力张量在坐标变换下的相似性原理,论述了VC++环境下利用MATLAB计算引擎实现一点应力状态主应力及应力主方向的计算方法。
Based on sectional construction and coordinate change, this paper presents a dissecting method which can be adapted to automatical dissection of finite elements in three dimensional flow and researches dissecting regularity in the different parts of the flow area. 本文从子块结构、坐标变换的角度入手,将有限元和矩阵理论相结合,提出了一种能够适应复杂三维流场有限元自动剖分要求的剖分方法,研究了流场不同区域的剖分规律。
Based on equal limit value of 3-D coordinate component, this paper derives the definite relation formula for horizontal component or vertical one. 本文基于GPS网环闭合差三维坐标分量限值相等的前提,从理论上推证出水平分量限值和垂直分量限值的确切比例关系;
Based on the motion description mode under the object centered coordinate system, this paper proposes a non rigid motion model by incorporating deformation parameters into rigid motion model using the notion of relative deformation. 该方法首先在物体中心坐标的运动表示方式下,通过在刚体运动模型中加入形变系数的方法给出了基于相对形变概念的非刚体运动模型;
Through theoretical analysis against the performance curves, analyzed how to draw the performance curves on linear coordinate paper. 对其性能曲线进行了理论分析,提出在线性坐标纸上绘制性能曲线的方法。
Based on the relation between different spatial rectangular coordinate system, this paper presents a new method to solve the transformation of GPS geodetic coordinate to local coordinate system. 本文根据不同空间直角坐标系的关系,提出了一种利用线性回归理论解决GPS大地坐标向地方坐标系坐标转换的新方法。
The construction of machining robot with five coordinate is analyzed in this paper, working space of the robot is defined and relevant solution is presented, the machining function can be realized when replace six coordinate combined motion by five coordinate combined motion. 对五坐标加工机器人作了结构分析,定义了这种机器人的工作空间并提出相应解法,用五坐标联动便可实现六坐标联动的加工功能。
The teaching equipment of automatic industrial manufacturing line based on PLC control is researched and manufactured to coordinate teaching. This paper mainly introduces its structure of the teaching equipment, its principle and the realization of PLC control. 为了配合教学,研制了基于PLC控制的工业自动化生产线教学设备,文中主要介绍了该教学设备的结构、原理及PLC控制的实现。
If the Nomogram be drawn on a A3 coordinate paper, the estimated reliability will reach 0.9-0.999, which will meet the needs of common mechanical reliability design. 如将算图绘制在A3坐标纸上其可靠度可达0.9~0.999,能满足一般机械的可靠性设计。
In plane polar coordinate system, this paper deduces the basic formulas that determine the form of stress functions and puts forward a method for the solutions to the problems in plane polar coordinate of elastic mechanics. 在平面极坐标系中,推导了确定应力函数形式的基本公式.对于弹性力学平面极坐标问题的求解,提供了一种方法。
Park transformation has important theoretical and practical values in analysis and calculations of the electric power system. By means of general phase and coordinate transformation, this paper presents park transformation directly from three-phase unbalance system in theory. 在电力系统分析和计算中,park变换具有重要的理论和实际意义,直接从三相非平衡系统出发,借助通用相量的概念,通过坐标变换,从理论上得出了三相非平衡系统的park变换。
According to the principle of DDD consistency coordinate transformation, this paper transfers the mesoscale equations in the Cartesian Coordinate System into the mesoscale equations in the Terrian-Following Coordinate System. 本文根据差微差一致的坐标变换原理,将箱卡尔坐标系中的中尺度方程组变换成为地形坐标系中的中尺度方程组。
At first the paper begin to study the foundation of digital curved face and space meshing principle, introduce the basic knowledge of curve theory and curved face theory, explain the mathematical tools of vector turning and coordinate conversion in the paper; 论文首先从参数化曲面和空间啮合原理基础出发,介绍了曲线论和曲面论的基本知识,对课题研究重的数学工具矢量回转和坐标变换进行了说明;
Using projective and perspective transformations, the mathematical model of 3D vision inspection for grid structured light is established in homogeneous coordinate system in this paper. 本文在广义坐标系中采用投影和透视变换理论建立了网条结构光三维视觉检测模型。
Based on the symmetrical component coordinate system, this paper presents a partly decoupled method dealing with harmonic network. 基于对称分量理论,提出了一种电力系统基波-谐波部分解耦的潮流算法。
Then build right-angle coordinate on tracing paper, trace out the figure curve of impacted tooth and number the figure paper. 在专用描图纸上建立直角坐标系,描绘出埋伏牙的轮廓曲线,轮廓图按照顺序编号。
NCO is widely used in many fields Based on the basic coordinate conversion, this paper derives the principle of CORDIC algorithm precisely; NCO有着广泛的应用。本文从基本的坐标变换公式出发,严谨地推导了CORDIC的原理,简明扼要地阐明了微旋转和模畸变预矫正。
In view of shortcomings on the computation of spur dike circumfluence formerly, the two dimensional plane changeable depth stream function-eddy model in the boundary-fitted curvilinear coordinate was developed in this paper. 针对以往常用的丁坝绕流流场计算方法存在的不足,建立了边界拟和曲线坐标变换下的平面二维变水深流函数-涡量数值模型。
In view of morbid matrix of GPS coordinate transforming into local coordinate, the paper puts forward the separation regression method and introduces the principle, the transformation process and the transformation example of the separation regression method. 针对目前GPS坐标向地方坐标转换时易出现病态矩阵的问题,文章提出了分离回归法。并介绍了分离回归法的基本原理、转换过程及转换实例。
Through an analysis of the measuring process and measuring errors in the coaxiality of long distance bores on a cylinder head of locomotive diesel engine using a three dimensional coordinate measuring machine, the paper investigates and probes consistence and equivalence of design datum and measuring datum. 通过对三坐标测量机检测的机车柴油机气缸盖上远距离孔同轴度的测量工艺和误差分析,探讨了设计基准与测量基准的一致性及等效性问题。
Through the study and analysis of Chinese CP ( coordinate phrases), this paper explores some common linguistic features between Chinese and some other languages in the world as well as some typical language type features in Chinese CP. 通过对汉语联合短语的研究和分析,本文发掘了汉语与世界上其它一些语言之间的语言共性特征,同时也发现了汉语联合短语的一些典型的语言类型特征。
Two methods of the omni-directional system calibration including arbitrary image and fringe coordinate paper are compared. The fringe coordinate paper calibration method uncertainty is researched. 对比基于任意图像和基于条纹坐标纸的两种全景系统标定方法,对基于条纹坐标纸标定方法的不确定度进行了研究。
Because of fluctuation of power system and the coupling of mathematical model in dq coordinate system, this paper presents a current feedforward decoupling control method. 针对电网电压扰动和dq坐标系下三相VSR数学模型的耦合性,本文提出了一种前馈解耦控制方法。
On the basis of model in the dq coordinate system, the paper proposes a mult-closed-loop control strategy. Decoupling feed forward control is used in the inner loop current. 基于dq轴模型,提出了双闭环的控制策略,电流内环采用前馈解耦控制。
Thirdly, the mathematical model of the three-phase single stage grid-connected PV inverter were established in the three-phase stationary frame and two phase synchronization coordinate separately. The paper mainly analyzed double closed-loop control strategy based on synchronous frame control technology. 然后建立了三相单级光伏并网逆变器在三相静止坐标系和两相旋转坐标系下的数学模型,重点分析了基于同步坐标系直接电流控制技术的双环控制策略。