文中提出了一种改进最小二次误差准则网格简化算法。
A modified and simplified algorithm based on the QEM algorithm is proposed.
为了解决这个问题，本文作者提出一种改进的基于二次误差测度的网格简化算法。
In order to solve the problem, this paper put forward an improved mesh simplification algorithm based on quadric error metrics.
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.
为了提高网格简化的图像质量，提出一种基于离散曲率的二次误差度量网格简化算法。
In order to improve the image quality of mesh simplification, a mesh simplification algorithm using quadratic error metrics was provided based on discrete curvature.
给出了一种基于三角形内角加权和二次误差度量的三角形折叠算法来简化三角网格模型。
A triangle collapse algorithm is presented, which is based on internal angles weighted and quadric error metrics to simplify mesh models.
在二次误差度量算法的基础上，考虑边界约束条件和法向量限制，扩展了算法的应用范围。
Based on the primary quadric error metric arithmetic, combined with boundary constrained condition and normal restriction, the primary arithmetic is modified and the application scope is extended.
为了将两者有效结合，将二次误差矩阵应用在整个简化过程中，简洁地传递了两个过程中的相关信息。
In order to effectively combine the two schemes, uses quadric error matrix to transform related information between the two steps in the whole process.
本文探讨了“串级阵阶模型误差”(包括控制回路中的惯性环节)对线性二次型(LQ)最优控制的稳定鲁棒性的影响。
In this paper the effect of "serial reduced order modelling error" (including the inertia links in regulation loop) on the robust stability of LQ optimal regulators is analysed.
应用矩阵力矩分配法推导出了力矩二次分配法的误差计算公式。
By applying matrix moment distribution method, we deduce that error calculation formula of moment quadratic distribution method.
对改进算法中二次滤波的噪声方差参数选取采取一种计算反卷积剩余误差的方法，用在第二次滤波步骤中。
The paper also gives an algorithm for estimating the variance of the imaging noises by computing residual deconvolution errors, which is used in the second step of the modified Wiener filter.
本文给出了线性模型中椭球约束下，误差方差非负二次估计可容许的一个必要条件。
This paper gives a necessary condition for the admissibility of a nonnegative, quadratic estimator for error variance in linear model with respect to restricted ellipsoidal parameter space.
而PT二次压降又是引起电能计量装置综合误差的直接原因之一。
PT secondary voltage step-down is one of the reason which causes the comprehensive error of the electric energy metering equipment.
在非线性偏微分方程中，根据弱可压缩液体的假设，忽略二次梯度项，在试井较长时间内将产生误差。
According to the assumption of slightly compressible fluid, neglected the quadratic gradient term in nonlinear partial differential equation is usually lead to error.
利用二次移动平均模型，引入均方拟合误差最小的原理确定出时段数n，对国民经济总收入、人口数量等项目进行了预测。
The total income of national economy and the amount of population are predicted with second-degree moving model and with the principle of least mean square fit error determining designated value n.
提出了一种在带有反转平台的精密离心机上标定陀螺加速度计误差模型二次项系数K 2的D -最优试验方案。
D-optimal test scheme was presented for calibrating second-order coefficient K2 of PIGA (Pendulous Integrating Gyro Accelerometer) error model on a precision centrifuge with counter-rotating platform.
建立扭转弹性波主动控制系统的物理模型，研究二次源、误差传感器位置对最优控制效果的影响。
A physical model of the active control of torsional wave is set up in this paper. Dinfluence of error sensor and secondary source on the optimal control results is studied.
本文提出了一种改进的分段二次插值法描写光学系统的光瞳形状，得到了满意的效果，其坐标误差小于1%，面积误差约0.25%。
A modified segmental quadratic interpolation method which describes the shape of optical system pupil with relative coordinate error less than 1% and area error about 0.25%, is presented.
文中给出并证明了在椭球约束条件下线性模型中，误差方差的非负二次估计的可容许性问题的一个必要条件。
The paper raises and proves an essential condition of volumetric property of nonnegative secondary estimation of deviation and variance in linear model.
基于对称分量法，对电能表中性点虚接后的电压互感器二次压降进行了分析，得出了正确接线前后的计量误差变化量。
The on-site test results indicate that energy meter's neutral point virtual connection has a great effect on PT secondary voltage drop.
对于复杂非线性隐式极限状态方程的结构可靠度计算，该方法比传统的二次响应面法误差小、精度高。
For structural reliability analysis of complex nonlinear implicit limit state equation, this method had lower error and higher precision than the traditional quadratic response surface method.
本文研究了跟踪误差最小化的两种模型：二次优化模型和线性优化模型。
This article investigates two models for minimizing tracking error: quadratic tracking error optimization and linear tracking error optimization.
提出了对二次包络环面蜗杆传动修形的方法，以降低蜗轮副对制造误差的敏感性。
A method of modifying the double enveloping worm gearing with developable tooth surface has been proposed to reduce the sensibility of the worm gearing to the manufacturing errors.
提出了输入方式误差的新概念。以它为基础，对线性二次型最优控制问题进行修正设计后，可实现精密跟踪。
The paper proposes a new concept; input pattern error. On the basis of this concept, precise tracking can be realized after the correction design of optimal control of linear quadratic form is made.
在二次损失函数下，研究了增长曲线模型误差方差的非齐次二次型估计的可容许性问题。
We study the admissibility of the quadratic estimate for error variance in two classes of growth curve model.
电能计量综合误差是由电压互感器的合成误差、电流互感器的合成误差、电能表的误差、电压互感器二次导线压降所引起的计量组成。
There exits a compound error problem in the electrical measurement, which is composed of PT synthetic error, ct synthetic error, electrical energy measurement error and secondary potential of PT.
在二次损失函数下，研究了增长曲线模型误差方差的非齐次二次型估计的可容许性问题。
The admissibility of non-homogeneous quadratic form estimate of variance on the growth curve model was studied under quadratic loss function.
结果表明，方法误差与随机噪声的性质有关：在本底噪声为主时，二次曲线拟合法精度高，计算量小。
The result shows that the parabolic fit method has a high precision with fewer computing time when the background noise is the main noise source.
二次计量误差是造成工厂用电计量平衡困难的原因之一。
The secondary measurement error is one of the causes which make difficult for the balance of plant power consumption measurement.
电流互感器二次负载阻抗对电流互感器误差有较大的影响。
Secondary load impedance of a current transformer(CT) has great influence on the error of the CT.
并提出了二次曲线拟合的误差校正方法。
Two order polynomial fit method to calibrate error is put forward.
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