查询词典 weighting function

Therefore, the absolute magnitude of the error pattern can be represented by the extra sum of squares using the weighting factor .

因此，绝对程度的误差模式可以通过多平方用加权因子代替。

A weighting spectrum differing from WIMS 69 group library is used to calculate group constants. The importance of actinides and structure material is consided during the selecting of input parameters according to the above sensitivity analyse.

同时，参考前面灵敏度分析的结果，在研制WIMS82群库时，充分考虑了灵敏度较大的錒系核素和结构材料核在温度、参考σ〓值、Goldstein-Cohen λ〓值等参数的选取时应具有与〓U、〓Pu同样重要的地位。

Experimental evidences on ideal and real data show that different weighting and scaling have different influence on the adjoint assimilation system,and the system has good ability of assimilation and the adjoint code method is a very effective tool.

通过理想场和实际资料进行的试验发现：权重系数和尺度因子选取的不同会对伴随模式同化系统产生不同的影响。试验表明伴随模式系统有较强的同化能力，对提高预报效果有积极的作用，用伴随码推导伴随模式是很有价值的工具。

In this paper,the Analytical Hierarchy Process method is applied to determine the weighting coefficients of the indexes in the evaluation system of regional ecological security.

随着经济的快速发展和工业化进程的加快，环境污染与生态破坏日益严重，生态环境问题已逐步上升到生态安全问题。

Aircraft antiskid braking system can meetthe performance indexes by means of a fit weighting matrix in controllerdesign.

由于干跑道能提供较大的结合力矩，飞机在干跑道刹车的性能通常比较好。

Firstly, the isotropic difference templates were introduced to approximate the differential in the ADI-FDTD method, and the weighting coefficients of difference terms were determined for implementing isotropic numerical dispersion; Then the permittivity and permeability were adjusted manually to reduce the numerical dispersion error in any directions. Therefore the simulation accuracy and efficiency can be improved effectively for time domain problems with some finite bandwidths.

该方法在ADI-FDTD方法的差分近似微分中引入各向同性差分模板，并通过确定各向同性差分的加权系数来近似实现各向同性，然后人为修正空间的介质参数来减少各个方向上的数值色散误差，因此在模拟一定带宽的时域问题时可有效提高计算精度和计算效率。

2 Each section will be given approximately equal weighting.

每项的比重大约是均等的。

By means of augmented Lyapunov functional and free-weighting matrix approach,a delay-dependent sufficient condition is presented,which can make the resulting closed-loop systems asymptotically stable and satisfy a prescribed H∞ norm-bounded constraint.

利用增广Lyapunov泛函并结合自由权矩阵方法，得到使得闭环系统鲁棒渐近稳定且具有给定的H∞性能的时滞相关充分条件。

Based on the analysis of the mechanism of robot manipulators, a trajectory tracking controlling research model is first built up with ADAMS, and its mathematical model is formulated through the study of robot kinematics and dynamics. After the modeling errors are analyzed in practical robotic systems, a conception of centralized error is brought forward according to the theory of weighting functions. In the case of modeling errors' exist, the robotic uncertain model is derived by introducing an auxiliary control variable into inverse dynamic analysis. The control strategy of robust exponential convergence is applied to the robotic uncertain model, the applicable conditions and the applicable controller with this application are presented. The stable control effect under three main model uncertainties (parametric errors, joint disturbs, joint frictions) are systematically studied on the previously built research model. The problems of robust exponential convergence controller which often results in unstable output and so produces a large relative error when the input trajectory is in a small range are resolved by adjusting the control parameters based on the controller's structure.

本文在机械手的机械结构分析基础上，利用ADAMS建立了用于机械手轨线跟踪控制研究的机械手模型；通过对机器人运动学和动力学问题的研究，建立了机械手研究的数学模型；分析了机器人系统中模型误差的主要来源，根据加权函数法分析，提出了模型集中误差的概念；在存有模型误差的情况下，采用逆动力学结构并引入辅助控制量，由机器人误差模型推导了机器人非确定性模型；提出了采用鲁棒指数收敛法对上述机器人非确定性模型进行鲁棒镇定的控制策略，并给出了对机器人进行鲁棒指数收敛控制时系统不确定因素应满足的匹配条件；针对机械手研究模型，深入研究了鲁棒指数收敛控制器对机器人系统中常见的模型参数误差、关节扰动、关节摩擦等不确定因素的镇定控制效果；针对鲁棒指数收敛控制器易产生控制量振荡的问题以及在小范围内系统轨线跟踪的稳态误差过大问题，本文分别提出了基于控制器结构的控制参数调整法和基于轨线跟踪范围大小的控制参数分段切换法。

1 Barite is one of the weighting materials.

重晶石粉是加重材料的一种。

Many will continue to choose to live in duality and in conflict.

许多人将继续选择活在二元对立性和冲突中。

I find that students of the University of Physical Education all wear sportswear at first sight.

我发现：体育大学的学生乍一看，都是穿运动衣，大家都一样