通过分析网络误差曲面特征，提出了快速BP算法，它可以大幅度地提高学习速度。
Based on analysing characteristics of error curved surface of the network, the authors have advanced the rapid BP algorithm, which can greatly raise the learning speed.
本文在分析低码率压缩码流运动矢量场以及误差曲面性质的基础上，提出一种基于时空预测的快速运动估值方法。
In this paper, based on the analysis of the characteristics of error surface and motion vector field, we propose a fast search strategy for motion estimation is proposed.
算法结合误差曲面特性以及运动矢量中心偏移特性，得到最佳参考运动矢量；利用运动矢量的方向和强度信息，确定搜索方向，切换搜索模式，搜索的同时应用全零块的中止准则。
It gets the best reference motion vectors from the error - surface and the center deviation characteristics, and it USES the direction and intensity information to choose the proper searching mode.
通过误差矩阵和模具的工作特性函数反求输入控制量是加工高精度的自由曲面光学镜所面临的难题。
It is a difficult problem to solve the inputted data when the matrix of error data and the working characteristics of the tool are known in precision machining.
其中曲线拟合是一个在给定误差下进行曲线逼近的过程，当曲线拟合完成之后，整个曲面的控制点的数目也就确定了。
Curve fitting is a curve approaching process under definite error and the number of control points throughout surface is ascertained after curve fitting completed.
采用曲线曲面匹配和误差分离技术对测量数据进行处理，完成了对被测件的评价。
The part is evaluated using the techniques such as curve matching, curved face matching and error separating.
针对这一问题，提出了全曲面等误差和均匀粗糙度加工的概念。
In the paper, a new conception about equal errors and uniform roughness on whole surface is proposed.
以旋转抛物面为例对空间曲面的五轴加工进行分析和数学推导，并对其进行误差分析和数据处理。
The paraboloid of revolution is taken as an example to progress the study, derivation, error analysis and data processing of the five axes machining for space curved surface.
介绍了一种可提高非球曲面超精密加工机床的轮廓跟踪精度的误差补偿控制方法。
An error compensation control method which can improve contour tracing accuracy of aspherical surface ultraprecise machine is introduced.
在此基础上，进一步提出了自由曲面测量误差的补偿方法。
On the basis of above research, the measuring error compensation method for free-form surface is proposed.
通过对一自由曲面分块测量及数据拼接实验表明，这种方法参数求解简单，空间距离拼接相对误差优于0.56%。
Through an experiment for free-form surface measurement, the approach is proven to be simple for parameter computation and its relative error for space length measurement is better than 0.56%.
文中最后选取了一个比较有代表性的模型，通过对其进行建模和编程，验证本文的复杂曲面仿真算法和误差分析方法。
At last, a representative model is selected in this paper, using the program of this model, validated the simulating method of complex surface and the error analysis method.
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.
以汽轮机叶片曲面形状误差评定为例，证实了该评定方法的优越性。
An example of evaluation of the steam turbine vane surface form error verifies the superiority of this evaluation method.
通过对典型工程曲面的展开试验，定量地研究了制成展开样板误差的主要因素。
Through developing experiment of typical engineering curved surface, main factors of manufactured developing profile board have been quantitatively researched.
模具型面补偿方法可以很好的控制曲面形状误差，满足成形精度的要求。
The tooling compensation method can reduce shape error and improve the shape quality of products.
利用最小二乘法，建立过热蒸汽的密度与温度、压力之间的函数关系，实现过热蒸汽的空间曲面补偿法，力求测量误差达到最小。
Use method of the least squares to build function relation between temperature and pressure, the space camber compensation method is realized and makes THD measuring error least.
通过对不可展回转曲面近似展开方法的研究，得到了回转曲面近似展开、精度分析和误差矫正的数学模型。
By study the method of approximate development of surface of revolution, the mathematiccal model of approximate development, precision analysis and error correction has been gained.
为了确定曲面误差与不确定度参数之间的关系，推导了曲面最佳适配的灵敏度矩阵。
In order to investigate the relationship between the surface geometric errors and the uncertainty parameters, the sensitivity matrix was deduced.
在研究平均二次误差与曲面曲率关系的基础上，提出了变分辨率的曲面重建算法。
Based on study of relationship between the average quadric error and the surface curvature, a variable resolution surface reconstruction algorithm was proposed.
对五坐标曲面加工中由离散线性运动逼近理想刀具轨迹所引起的理论加工误差进行了较严格的分析。
The theoretical error in five axis NC machining, which is resulted from approximating the perfect continuous tool path with discrete linear segments, is strictly analyzed.
对曲面重构误差和总反求误差进行了分析。
The error of surface reconstruction and the whole error are analyzed.
分析了自由曲面三坐标投影法数控加工的步长误差和行距误差。
The step error and line error of free-form surface of projecting NC machining were analyzed.
详细研究了测量系统各组成部分的特性和系统的实现方法，完成了已知自由曲面的测量和轮廓度误差评定，实现了未知自由曲面的测量和数学模型的建立。
The design method of the system and the characteristics of its components are studied in detail. By using this system, a known free-form surface can be measured and its profile error can be assessed.
提出了一种满足最小区域法的曲面形状误差评定方法。
A method for calculating the surface form error with the requirements of the minimal zone is proposed.
从提高自由曲面数控加工精度入手，对多轴数控加工的误差进行了分析，并提出了较为合理的走刀步长的估算方法。
In order to improve the precision of freeform surface, the error of multi-axis NC machining is analyzed and a more reasonable estimate for tool step is given.
本文建立了用最小二乘法评定复杂曲面面轮廓度误差的通用数学模型。
In this paper, a general mathematic model of profile error of complex surfaces is proposed with the least squares evaluation.
此外，本文还建立了实际曲面与理论曲面之间的法向误差模型，对法向误差的计算过程进行了说明。
Besides, this paper also presented the model of normal error between actual surface and theoretic surface and probed into the calculating method of normal error.
此外，本文还建立了实际曲面与理论曲面之间的法向误差模型，对法向误差的计算过程进行了说明。
Besides, this paper also presented the model of normal error between actual surface and theoretic surface and probed into the calculating method of normal error.
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