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位移误差     
相关语句
  displacement error
     In this survey system, displacement error and nonlinear error from pressure are compensated. Survey precision is up to ‰.
     在测量系统中对由压力产生的位移误差以及压力的非线性误差进行误差补偿,提高测量精度一个数量级别,最后测量精度为2‰。
短句来源
     Ideal Datum in the Datum Displacement Error Calculation
     基准位移误差计算中的理想位置
短句来源
     Because the stage was controlled by the Neural-Network PID controller in a closed routine,the weights of BP network were adjusted on-line and the parameters of PID controller can be changed in real-time to reduce the displacement error of stage.
     神经网络PID控制器对工作台进行闭环控制,能够在线调整网络加权值,实时改变PID控制器的系数,减小工作台的位移误差
短句来源
     Set up the mathematic model of cover curve to avoid the radial displacement error which evocabled by the thickness of vane.
     通过建立数学模型以消除叶片厚度引起的径向位移误差
短句来源
     The influence of above-mentioned errors on flange connection is analyzed in detail in aspects of the product angle displacement error,gauge angle displacement error, gauge displacements and flange shape.
     法兰盘中间孔作为基准孔,其位置偏移了中心位置。 文章根据设计实例,从产品角位移误差、量规角位移误差以及产品与量规角位移的4种情况等方面详细分析了角位移超差对法兰盘对接产生干涉的影响;
短句来源
更多       
  displacement tolerance
     The study of numberical control machine tool displacement tolerance
     数控机床位移误差的研究
短句来源
  displacement errors
     Based on the volumetric error model of multi axis machine tools, an approach to determine the volumetric errors of CNC machine tools is proposed by measuring displacement errors of some determined diagonal lines in the work space by using a laser interferometer that provides a solution to the roll calibration of a vertical axis.
     提出了基于数控机床的空间误差模型 ,用激光干涉仪测量机床工作空间中的对角线位移误差来识别机床空间误差的方法 ,解决了机床垂直轴roll误差的测量难题 .
短句来源
     A method for obtaining the displacement errors of the probe from dynamic rotational errors is presented.
     提出由动态偏转角误差推导测头动态位移误差的方法。
短句来源
     Another is that displacement errors gotten by Range tracker is not actual motion errors of SAR platform, but the "modulated" errors in LOS induced by wide azimuthal angle.
     距离跟踪估计出的位移误差并非载机实际上的运动误差,而是被大波束角“调制”的瞄准线误差。
短句来源
     Based on the vector relationship between volumetric position errors and displacement errors, a new errors measurement method was put forward with sequential steps along the four body diagonals.
     通过分析机床沿4条体对角线的位移误差与空间位置误差间的矢量关系,提出了利用体对角线多步运动测得的位移误差分离机床运动轴位置误差的矢量分析方法.
短句来源
     The experimental results under the different operating modes with load or without load show that the displacement obtained by the real-time error compensation experimental software is accorded with the theoretical displacement of slider primely. The biggest drawing displacement errors after error compensation are only 0.9~% without load and 3.1~% with load respectively.
     结果表明,滑块理想位移曲线与误差实时在线补偿得到的滑块实际位移曲线吻合度很好,经过误差补偿得到的机构最大拉深位移误差无载时仅为0.900/,而有载时误差为3.100/.
短句来源
更多       
  shift error
     The effect of shift error with a shifter on the measurement of ROC was quantitatively analyzed, with a curved surface for the relationship of ROC error and phase-shifter displacement error presented.
     分析了移相器位移误差对曲率半径测量的影响,给出了ROC误差与移相器位移误差关系的曲面图,并对四步平均法和OAF算法产生的ROC误差作了比较。
短句来源
     It is indicated by the error results that, when shift error exists, the OAF algorithm has advantage over that of averaged four-step; and within the general range of calibration error and nonlinear shift error both being equal to or less than 5%, the measurement error of ROC of the fiber connector end-face through OAF is less than 7.2×10~(-5).
     结果表明:在有移相器位移误差情况下,OAF算法优于四步平均法,且在普通的标定误差≤5%和非线性误差≤5%所构成的移相器位移误差范围内,由OAF算法产生的光纤连接器端面ROC测量误差<7.2×10-5。
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  displacement error
It should be noted that the errors given in the paper are obtained based on the divergence among the displacements of the sites in the unit, rather than the value calculated from the displacement error of the sites.
      
An optimal order estimate inL∞(Ω) for the displacement error is given.
      
The magnitude of the misperception of acceleration correlated positively with relative left overextension in the line extension task and with rightward displacement error in the line bisection task.
      
The puncture needle exhibited a displacement error of -10.9 to 3.8?mm (center hole) and -11.3 to 3.8?mm (side attachment).
      
The displacement error was less accentuated in the center and accentuated in the left side of the field of view.
      
更多          
  displacement tolerance
In the first example a stimulator which has excellent displacement tolerance because it works at critical coupling is designed.
      
And a displacement tolerance is adopted to control the maximum displacement interval in each iteration cycle.
      
If concern still exists, the displacement tolerance in microamperes could be tightened for application to wide aperture arrays.
      
  displacement errors
Several experimental parameters are discussed in respect to their influence on the displacement errors.
      
In the present study, the influence of displacement errors and their sensitivity on the accuracy of pressure measurement was examined by uncertainty analysis.
      
A method is presented to reduce displacement errors during compounding of ultrasound B-scans of a normal human shank.
      
Results show that combined EDPAs are preferred to detect and predict displacement errors in sequential robot motions.
      
Pointwise displacement errors in linear shell theory resulting from errors in the stress-strain relations
      
更多          
  shift error
Optical compensation for doppler shift error in synthetic aperture radar
      
In this paper, the effects of Doppler shift error on the imaging of synthetic aperture radar are analysed.
      
With help of the measure the paper discusses the robust estimates under the stochastic error model and mean shift error model.
      
Under the measure and the mean shift error model, the most robust estimate is the one with minimum mean squared error proposed by Zhu Jiangjun in 1991.
      
Cavity phase-shift error evaluation in a magnesium atomic beam frequency standard
      
更多          
  其他


A The multiple linear regression equations derived by MOS technique were tested for forecasting Western Pacific typhoon tracks. Numerically predicted 500 mb geopotential height at 27 grid points in the north of typhoon and parameters showing the state of typhoon were selected as predictors. Two kinds of regression equations derived with different predictands were described. In the first kind, the predictands are the displacement of typhoon at intervals of 12 hrs. In the second kind, the predictands are the correction...

A The multiple linear regression equations derived by MOS technique were tested for forecasting Western Pacific typhoon tracks. Numerically predicted 500 mb geopotential height at 27 grid points in the north of typhoon and parameters showing the state of typhoon were selected as predictors. Two kinds of regression equations derived with different predictands were described. In the first kind, the predictands are the displacement of typhoon at intervals of 12 hrs. In the second kind, the predictands are the correction amount of the displacement error of typhoon numerically predicted. But there were only 84 statistical samples, therefor it might have some influence on the forecasting stability of the scheme.

本文应用台风位置以北的27个网格点上的数值预报位势高度和一些持续性因子作为预报因子,采用逐步回归方法,分别建立了初始时刻后各时段内的台风位移和台风数值预报位移误差订正量的回归方程。但由于样本较少(仅84个样本),预告的稳定性可能会受到一定的影响。

In this paper, using functions of a vibrating beam as displacement functions, we solve rectangular plate cases of various boundary conditions by minimal potential energy principle and Rayleigh—Ritz method.Taking the first term of the series of functions of a vibrating beam, the displacement error is small。 Taking the first two terms, the stress error is small.This method of calculation is simple and convenient.

本文利用振动梁函数作为位移函数,在各种边界条件的矩形板的情况下,用最小势能原理和瑞利—里兹法求解,取振动梁函数的级数第一项得到的位移误差较小,取头二项得到的应力误差较小.此法计算简便.

This paper presents the solution for angular displacement of various joints by rotation transformation tenser method, according to the prescribed trajector and posture of workpiece held by the moving manipulator. This anthropmorpic manipulator is a RPRPRP spatial mechanism.

本文主要研究用回转变换张量法,根据机械手夹持工件的运动轨迹和姿态求解出各关节的角位移。最后,还对机械手的位移误差作了讨论。文中的仿人机械手为RPRPRP空间机构。

 
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