The method of generating elements and nodes automatically by reading coordinate data on surface of bus body is introduced and realized to discrete the topology space of three - dimensional turbulent flow field around buses 客车周围流场三维湍流数值模拟的空间离散化研究实现了由车身外表面离散点坐标数据文件自动剖分生成单元、节点和边界条件的方法。
The emulation indicates that only if some measures are adopted to decrease the projection points ' coordinate error , error of the distortion center would be less than 2 pixels and relative error of the distortion coefficients would be no more than 0 . 1 仿真表明，只要采用相应方法降低像点坐标的误差，畸变中心的误差小于2个像素，畸变系数的相对误差不超过0 . 1 。
In the calibrating process , complicated measurement is avoided and the calibration is fast and easy to carry out , which simplifies the calibrating procedure . the experiment results show that the space measurement accuracy is better than 0 . 15mm 这种参数分离法避免了标定过程中对空间点坐标的测量过程,不需要复杂精密的测量设备,计算速度快,试验表明传感器的精度达到0 . 15mm 。
The presented neural network takes strain - time data as input at two locations on the back of struck body , and gives highly precise outputs of the impact force - time data , impact kinetic energy and the coordinates of impact position 本文提出的神经网络方法采用被撞击体上选定两位置点的应变-时间历程数据，即可高精度反演出撞击力-时间历程以及撞击点坐标及撞击动能等撞击参数。
Considering the central line lofting of road in mountain area with varied topography , the paper suggests a more convenient curve draught method called the casual position to set up instrument , and deduces the formulas for lofting points 摘要文章针对在地形复杂的山区放样道路中线时，提出采用随意按置仪器法（以下简称随意置仪法）测设曲线更为有利，并推导出放样点坐标计算公式。
Image coordinate and galvanometer pendular angle are kept in the computer according to the f9 field lens characteristic , enter pupil excursion and f6 characteristic error are ignored , that the image of laser scanning point move acceding to unlinearity relation is deduced theoretically . for deducing the distortion , error compensation is considered in the software 像点坐标与振镜摆角按f物镜特性的线性关系存储在计算机，在忽略了入瞳漂移和f特性误差后，从理论上推导出二维垂直振镜分布中激光束扫描点的像点按照复杂的非线性关系运动，为了减少几何畸变，在软件设计中给出误差补偿。
It utilizes the computer digital image processing technology . and this system can measure the characteristic parameters automatically and quickly , such as luminous intensity , center of far light , corner of the close light . the advantage is high accuracy , good repetition and automatic measurement 此系统采用多维精密可调工作台，并利用计算机数字图像处理技术，以vc + +编程实现，达到了自动测量出被测校准器的发光强度，远光中心坐标，近光拐点坐标以及光轴偏角等特征参数的目的。
Having great difference with the tradition structure , its outline is no - gradual - enlargement . the reason of rotator the key point coordinate and restriction , origin of the new coordinate system after transform , the angle of the rotator . transform of the key point between the new and old coordinate system , the rotator angle of coordinate system in ansys during the fem model come into being 本文讨论了非渐扩形结构指尖密封曲梁关键点坐标旋转的原因、旋转的约束条件，旋转后新坐标系圆心坐标的获得、旋转角度大小的确定、曲梁型线关键点坐标在新旧坐标系之间的转换及在ansys中建立有限元模型时坐标系旋转的原因及角度大小的确定等问题。
The apsp produced abroad is made by numerical controlled machine tool , which has noise level of 71db ( a ) , the apsp produced in our country is made in the method of exploratory which has noise level of 73db ( a ) and 75db ( a ) . in order to analyze the influence of stator curve to noise , the author used tri - coordinate measuring instrument to measured exactly the inside surface of stator and got the straddling point coordinate , and made curve fitting by using matlab as language and studied the fitting effect and then worked out the equation of stator transition curve in return seeking , then comparied this method with the standard style and made the conclusion : the equation of atator transiting curve of apsp made by numerical controlled machine tool is close to theorical 5 power curve standard style , but compared with it , the stator transiting curve of apsp produced in exploratory has a major error . combining the testing results of noise , one can know that the qualily of stator transition curve play an importance to t he noise of the pump 国外生产的汽车动力转向泵是用数控机床加工的，其噪声值为71db ( a ) ，国内生产的汽车动力转向泵是用靠模方法加工的，其噪声值分别为73db ( a )和75db ( a ) ，为了分析定子曲线对泵的噪声的影响，本人用三坐标测量仪对定子内表面进行精密测量，获得定子内表面的离散点坐标，以matlab语言为工具对离散点进行曲线拟合，观察拟合效果，然后，用回归方法求出了定子过渡曲线的方程，并把该方程与理论方程标准型进行了比较，得出如下结论：用数控机床生产的汽车动力转向泵的定子过渡曲线方程非常接近理论5次曲线标准型，而用靠模方法加工的汽车动力转向泵的定子过渡曲线与理论5次曲线标准型相比较，则存在着较大的误差，结合噪声测试结果可知，定子过渡曲线的优劣，对泵的噪声大小有着重要的影响。
Through analyses of epipolarity geometry of the linear ccd push - broom images and frame perspective images , based on the projection track method , epipolarity of linear ccd push - broom image is established and the properties of epipolarity curves is discussed , and a new epipolarity model based on the simplified push - broom sensor model is proposed . for stereo images of frame perspective and linear perspective , how to set up of epipolarity is studied in terms of fundamental matrix in computer vision , and an algorithm of epipolarity solution that only depends on coordinates relation of identical point is presented . 4 通过线阵ccd推扫式影像和框幅式中心投影影像核线理论的对比研究，利用投影轨迹法建立了线阵ccd推扫式影像的核线模型，分析和总结了它的基本特性；针对基于共线方程的简化传感器模型，提出了一种新的核线模型；对框幅式中心投影立体影像和线阵ccd推扫式立体影像，利用计算机视觉中的基本矩阵研究核线关系的建立，提出了一种单纯依靠同名点坐标关系的核线模型解法； 4
