误差

Aiming at precision measurement of cylindricity,this paper puts forward a kind of method which can sep- arate the cross- section roundness error,the radius error of different cross sections,the initial coordinates of least square centers of measured cross sections and can reconstruct the pattern of the measured cylinder,i.

本文针对圆柱度误差的精密测量，提出了一种可分离截面圆度误差、截面半径差和截面最小二乘圆心初始位置并重构出被测圆柱形貌的方法，即三点法圆柱度误差分离与重构技术。

Navigation error of Dead reckoning is emanative as time goes on,because sensor error is exist,and it is very difficult to be accurately measured direct.

由于存在传感器误差，航位推算的定位误差是随着时间发散的，而直接准确检测这类误差非常困难。

By measuring the point features to obtain the orientation of the bone and by adding compesated cutting path, results shows that the angle error between the connection of Femoral and Tebial mechanical axis is 2.44 degree and the angle error is 0.75 degree in epicondylar axis, which met the error in practical requirement for total knee replacement surgery.

在本论文中已完成实物设计制作，最后以Saw bone作为切割实验，利用量测点取特徵点得其骨头方位并加入补偿值调整切割路径，其结果股骨和胫骨之连线与机械轴误差为2.44°、epicondylar axis角度误差为0.75°，以目前实验误差已可符合实际膝关节手术之要求。

In the hardware circle design, the original measure signal is gained from the sensor, so it is critical to make a choice; In additional, a new type electronic component called True R MS-to-DC converter AD536A which can reduce the complex and expatiatory software transition is used to improve the system's response speed; This system is controlled by a single chip microcomputer which will processes the sampling signal.

在硬件电路中，由于原始的测量信号是从传感器获得的，因此传感器的选用比较关键。本仪表采用了新型电子芯片AD536，AD536真有效值芯片可以省去复杂冗长的软件换算过程，提高系统的响应速度，在此主要是介绍它的功能和应用特点；我们采用单片机对采样信号进行处理，选用凌阳16位单片机，着重介绍了它的性能特点；在采样和误差分析方面，对测量仪的数据转换系统进行了详细的分析，包括该系统的结构功能以及误差的来源，并提出了提高精度减小误差的措施。

The horizontal and vertical first derivatives of magnetic anomalies of an infinite cylinder are calculated by the cosine transform method, in which the maximum errors are -028 nT/m and 047nT/m, respectively and the percent errors are generally within -357%～327% and -194%～188%, respectively except several data of the boundary and part are bigger because of remains of Gibbus effect. The calculating curve and theoretical curve are approximately coincident, and there is no influence by effective magnetic dip angle in computing.

利用余弦变换法计算的无限长水平圆柱体磁异常水平和垂向一阶导数的最大误差分别为-028 nT/m、047 nT/m；水平一阶导数的误差一般在-357%～327%之间，垂向一阶导数的误差一般在-194%～188%之间；计算的磁异常一阶导数值与理论值大致重合，而且不受有效磁化倾角的影响。

While this situation is inadaptable for quantified description of time error in distributed cooperative measurement,this paper,integrat...

基于此，结合误差分析理论和网络被动测量的具体特点，提出了针对单点双信道被动测量系统的一般性时钟误差概率模型，引入误差不确定度来定量描述协调测量结果的精确度和合理性。

In Fourier transform profilometry,because of the nonlinear relationship between the irradiant incident upon a CCD dete ctor andthe voltage it outputs,it will cause phase evaluation errors.Here,we ex plain the errorsource by theoretical deducing,then make a simulation.At last,a method to decrease thiserror is put forward.

文摘：在傅里叶变换轮廓术中，由于CCD探测器光电响应的非线性，将在测量中引入高次项，从而对相位的求解造成较大误差，通过理论的推导定性地解释了误差的来由，并用计算机进行了模拟计算，最后提出了减小误差的方法。

In Fourier transform profilometry,because of the nonlinear relationship between the irradiant incident upon a CCD dete ctor andthe voltage it outputs,it will cause phase evaluation errors.Here,we ex plain the errorsource by theoretical deducing

文摘：在傅里叶变换轮廓术中，由于CCD探测器光电响应的非线性，将在测量中引入高次项，从而对相位的求解造成较大误差，通过理论的推导定性地解释了误差的来由，并用计算机进行了模拟计算，最后提出了减小误差的方法。

The accuracy of the reduction result in terms of lateral displacement and angulation and malrotation were measured.

观察骨折断端的侧方移位误差，外翻/内翻成角误差，旋转误差。

By utilizing the theory of numerical processing, digital frequency spectrum analysis and multi-rate digital signal processing, this paper focuses the research on mechanism of the testing error, the compensation of testing error in the field of sampling technology, nonsynchronous sampling, nonuniformly sampling, and puts forward some new analyzing, compensation and realization methods.

本论文通过运用数值处理、数字频谱分析和多抽样率信号处理的有关理论和原理，对采样技术、采样的非同步方式和采样的多通道方式中的测试原理、测试误差产生机理、测试误差补偿及其应用技术等主要环节进行了深入的研究，提出了一些新的分析与处理方法，建立了有关测试误差分析与补偿的预估理论和实现方法。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。