查询词典 error model

According to the definition of axis straightness error ,a mathematical model was developed to evaluate axis straightness error by way of least square method in the rectangular coordinates.

根据轴线直线度误差的定义，建立了在直角坐标采样时该项误差的最小二乘评定法数学模型，该模型的采样数据不需要等角度间隔采样；并用计算机进行仿真分析·结果表明，所建立的数学模型编程简单，计算出的轴线直线度误差值与真实情况的误差小于 10 -6μm·因此由本模型引入的误差可忽略不计·所建立的数学模型为研制形位误差虚拟测量系统提供了理论基础

Based on the matrix analysis, the error sources of the measurement accuracy are analyzed, and the maximum relative error of this mathematical model is estimated.

实验数据表明，该方法将飞行器的姿态变化进行了有效放大，在一定转动范围内，对于姿态参数的测量误差不超过3′。

The simulation result shows that this dynamical prediction model has the performances like, better generalization, stronger robust, and preferable accuracy (the relative root mean square error of air is lower than 10%, and the relative root mean square error of oxygen is lower than 19%).

仿真研究结果表明：该动态预估模型具有较好的泛化能力和较强的鲁棒性，并具有较好预测精度(风量预测的相对均方根误差小于10%，氧量预测的相对均方根误差小于19%)。

Estimation of parameters for general liner functional model with singular covariance. First, the Rao decomposition of the sample variance and the known singular measure error variance are presented and then the square measure error with singular variance and the standardized condition are got.

首先讨论了样本协方差与已知的奇异度量误差方差的Rao分解，给出了含有奇异方差广义逆的二次度量误差和模型的标准化条件，证明了二次度量误差与广义逆的选取无关。

In this method we considerately consider the non-linear distortion of the scene and system error in the camera model, and introduce the non-linear distortion of the lens and system error into the direct-linear calibration algorithm, and quickly realize the camera calibration through a simple linear iterative method.

该方法在摄像机模型中全面考虑了镜头的非线性畸变和系统误差，在直接线性标定法中引入了处理镜头非线性畸变和系统误差的因子，通过简单的迭代求解实现了对摄像机的快速定标。

As to system s uncertainty such as time varying characteristics, grey multiple step error correction method took the place of the conventional single step error correction method. The new method could effectively overcome the bad influence of some factors such as model mismatch.

针对对象特性时变等不确定因素，该文以灰色多步误差预测校正替代原有算法的当前一步误差校正，可以更为有效的克服模型失配等因素的影响。

Matlab channel model, the right OFDM Channel modeling, statistical probability of error, and direct transmission error rates.

matlab信道模型，对OFDM信道建模，统计错误概率，并于直接传输的错误率比较。

As far as the seven kinds of interpolation approaches are concerned,the precision of ordinary Kriging method is the best one,and the error of statistical model is relatively high,of which the relative error reaches to 9.041%.

在7种插值算法中，采用指数模型模拟半异矩的普通Kriging法计算精度较高，统计模型的误差最大，其最大相对误差为9.041%。

The basic principle and method of time series analysis and its application in thermal error modeling on NC machine toots were presented. How to utilize the thermal error serials surveyed to identify, model, predict and compensate was discussed in detail.

提出了采用时间序列分析法进行机床热误差建模的基本原理及方法，及其在数控机床热误差补偿建模中的应用。

This model can be used to separate the installment position error with higher precision. The total error is no more than 0.4 μm.

由数学模型、评定方法和计算引入的误差之和小于0.4μm，充分证明了算法的可靠性、可行性。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失