The geometric model of the geometric error evaluation is established.
形位误差的几何模型建立。
The programming theory of the geometric error evaluation is established.
形位误差的规划模型建立。
A geometric error model for CNC lathe and the measured data are presented in this paper.
本文给出了数控车床的几何误差模型和一台数控车床的实测数据。
The software compensation of geometric error is realized in 4-coordinate NC machine tool.
在4坐标数控机床上实现了几何误差的软件补偿。
Springback often causes the geometric error when die design is based on the part shape required.
拉延件回弹常常会造成最终零件的几何偏差，以至于需要对模具进行修改。
Low and middle lever CNC machines have been widely used in our country, geometric error nearly takes account of 70% in total error.
中低档数控机床在我国应用极其广泛，几何误差是影响该类机床的主要因素，约占机床总体误差的70 %左右。
The geometric error of axial image reconstruction increases with the increase of CT scan slice thickness, due to CT partial volume effect.
重建CT图像的前后方向的几何误差是随着扫描层厚增加而增加，主要是由于CT扫描的部分容积效应影响。
The method represents the effects of all possible error sources on robotic mechanisms as generalized geometric errors in a unified manner.
通过任意两坐标系间的向后微分关系，利用运动学方程以及并联机构的环路特性，建立了微机器人的广义几何误差模型。
Centered around the subject, this paper mainly studies the theory and method of the geometric error evaluation, and the main work is as follows.
为了开发形位误差评定系统，在形位误差评定理论及方法进行了研究和探讨，围绕该课题本文主要进行了以下几个方面的研究工作。
Based on the theory of MBS, presenting the comprehensive errors model consisting of offset probe errors, geometric errors, screw thermal error and spindle error.
以多体系统理论(MBS)为基础，建立了包含测头误差、机床几何误差、丝杠和主轴热误差的综合误差补偿模型。
Post-processing of CNC machine tools is the important component of the CAD/CAM technology and NC programming system. Also, it is important way of compensating geometric error by software.
数控加工后置处理不仅是CAD/CAM技术和数控编程系统的重要组成部分，而且也是实现数控机床几何误差软件补偿的重要途径。
The geometric error modeling of NC machine tools is the key technique to dynamics design, precision analysis and error compensation. It is the important step to improve the precision of machine tools.
数控机床的误差建模是进行机床运动设计、精度分析和误差补偿的关键技术，也是保证机床加工精度的重要环节。
The variation geometric constraint net is applied into fixture error forecasting.
将变动几何约束网络应用于夹具误差预测。
Characteristics of the defocusing error signals are expressed in the terms of an off-axial detection system by geometric optics. The results are compared with experiment.
本文用几何光学描述了离轴探测调焦误差信号与系统参数的关系，并与实验结果进行了比较。
Geometric distortion in 5 different fields of view (FOV) was calculated by measuring the absolute borderline error of direct scan and coronal digital reconstructed radiograph (DRR).
将获得的图像分为不同大小的5个视窗范围，测量直接扫描图像和DRR图像的边界绝对位置误差并计算其几何畸变率。
Constraint equations were constructed by using distance error model, and the actual geometric parameters of the robot were solved, and then these parameters were used in the modified kinematics model.
利用距离误差模型构造出机器人本体的约束方程，并求解出机器人的实际几何参数，进而将该参数应用于修正系统的运动学模型。
This new beamformer minimizes the "geometric power" error between the beamformer s output and the reference signal.
算法利用输出信号和参考信号之间“几何功率”误差的最小化来求解最优权向量。
Manufacturing and assembly errors of key geometric parameters are obtained by experiments which supplies basis of machine error compensation.
通过试验，获得了该机床的关键几何参数的加工和装配误差，为机床的误差补偿提供了重要依据。
Compared with the geometric moment-based texture segmentation, we can reduce the error rates using orthogonal moments.
和基于几何矩的纹理分割相比，用正交矩可以降低分割错误率。
And three geometric correcting methods are provided for correcting the error originated from the digitizing and the map paper's distortion too.
同时，给出了三种几何纠正方法来纠正数字化和图纸变形产生的误差。
The leaf image taken by digital camera often has linear geometric distortion, it can bring error to the measurement of leaf area.
数码相机摄入图像时产生的线性几何畸变会给叶片面积的测量带来误差。
The effects of geometric eccentric and deformation of gear blank to motion errors is analyzed and an error model for gears left and right tooth profiles is built.
讨论了齿轮运动误差与模拟齿轮加工过程的关系；分析了齿坯几何偏心和变形对齿轮运动误差的影响；建立了左右齿廓形误差模型。
Error analysis shows that the displacement measuring error entirely depends on geometric positioning precision of the first bar code center.
误差分析表明：位移测量误差完全取决于首条码中心几何定位。
Moreover, the aggregation error rate is defined to evaluate the performances of geometric aggregation schemes more accurately.
定义了聚合误差率，以此作为准则来精确衡量几何聚合算法性能的优劣。
Total Vertical Error (TVE) : Vertical geometric difference between barometric altitude in actual flight of aircraft and designated barometric altitude (flight level).
总垂直误差(TVE)：航空器实际飞行的气压高度和指定的气压高度(飞行高度层)之间的垂直几何差值。
The effects of geometric eccentric and deformation of gear blank to motion errors is analyzed and an error model for gear's left and right tooth profiles is built.
分析了齿坯几何偏心和变形对齿轮运动误差的影响；建立了左右齿廓形误差模型。
The effects of geometric eccentric and deformation of gear blank to motion errors is analyzed and an error model for gear's left and right tooth profiles is built.
分析了齿坯几何偏心和变形对齿轮运动误差的影响；建立了左右齿廓形误差模型。
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