将重心的实际位置与理论位置相减，得到偏差量，将此偏差量消除系统误差，传给望远镜控制系统。
The error between the actual position and the theoretic position will be gotten and feed back the control computer.
系统误差(SYSTEMATICERROR)-受系统自身分布误差影响的大量测量结果的平均值与真值的偏差。
Systematic error - the mean of a large number of measurements influenced by systematic error deviates from the true value.
随机误差(RANDOM ERROR)-受随机分布误差影响的大量测量结果的平均值与真值的偏差。
Random error - the mean of a large number of measurements influenced by random error matches the true value.
以刃边齿条为工具，测量廓面的直母线族误差，通过误差处理与分析获得齿廓总偏差和螺旋线总偏差。
Taking the straight-line-rack as the tool the error of straight generatrix is measured and by error analysis the tooth profile error and tooth orientation error can be obtained.
由于转换过程的误差，加之吸附沥青的影响，导致计算值与实际值存有一定偏差。
Due to the error of the transformation and the influence of asphalt absorption, it leads to deviation between calculation results and real results.
由偏差和测量时间有限而引起的总误差与量化输入信号限幅电平有关。
The total error due to finite observation and bias is dependent on the limited level of the quantized input signal.
结果表明，滚刀与工件间的相对偏差变化速度的快慢不仅影响到齿轮加工精度，还影响到误差补偿方法的选取。
The result shows that the changing velocity of the errors has influence on the machining accuracy of the gear and the choosing of the compensating methods.
在水文频率计算中由于误差的存在，使得估计值与实际值之间存在偏差，这种偏差导致在水利工程设计中产生了不安全因素。
Due to errors of hydrological frequency calculation, the deviation between the estimated value and actual value causes the design of water conservancy projects to be insecure.
作者基于分析和建立加工曲面的型面几何偏差与加工刀位规划参数的关系，提出几何误差的控制方法。
This paper presents the methods to control geometrical errors based on the establishing of the link between geometrical errors and the parameters of tool path planning.
分析了对接面与管段中心线夹角误差对沉放后线路位置的影响，提出了控制隧道轴线偏差的措施；
This paper also presents a method to solve the tunnel axis displacement on line caused by angle error between tube center axis and datum of joint.
对于较小的负荷变化率，压力计算值与测量值偏差小于3%，而较大的负荷变化率时，偏差有增大趋势，但其误差小于5%。
The comparison result of computation value and measure value shows that their deviation is within 3% for low load ratio, and has increasing tendency for high load ratio, but it is within 5%.
该算法通过调整轧制力限制系数来调整约束条件使得最后道次的出口厚度与目标厚度的偏差小于给定误差，并同时获得优化的轧制规程。
The algorithm is able to adjust the schedule to make the strip thickness error less than set one by modifying the limit coefficient of rolling force.
当误差为正态分布时，与和极大似然估计完全一致，具有一致性和最小估值偏差。
They are consistent with the Sum Maximum Likelihood Estimate and have consistence and minimum bias.
实际的六自由度转台存在着制造和安装误差，转台各个铰点的实际坐标与理论值之间会有偏差。
Because the manufacturing error and installing error exist in the actual six DOF platform, there is divergence between each joint point's actual coordinates and its theoretic values.
实验结果表明，与最小二乘法相比，当数据中存在个别误差较大的离群点时，采用最小绝对偏差法可以使得定位精度得到明显改善。
Experimental results show that compared with least squares, least absolute deviation can improve location accuracy effectively considering the existence of several outliers.
实验结果表明，与最小二乘法相比，当数据中存在个别误差较大的离群点时，采用最小绝对偏差法可以使得定位精度得到明显改善。
Experimental results show that compared with least squares, least absolute deviation can improve location accuracy effectively considering the existence of several outliers.
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