近似方法

Using the strategy,the pure integration and stator leakage inductance are removed from the reference model.Then the low speed performance is improved.Simultaneously,As to the stator resistance identification,the accuracy of speed observation is increased and the rotor resistance can also be identified.

该方法消除了纯积分和电机漏感对算法的影响，电机的低速性能得到了改善；同时，对定子电阻进行在线辨识，从而得到准确的转速观测结果，也能近似地辨识转子电阻。

A quadrantal point infilling strategy is developed to generate point and combine clouds of points automatically. The implicit time-stepping scheme and AUSM+up method have been introduced and extended into gridless method.

本文提出了一种按区域进行填充布点的离散点云自动生成方法，把AUSM+-up格式和一种近似隐式时间推进格式引入到无网格算法之中，发展出了一种迎风型隐式无网格算法。

In this article,we firstly study the Rabi model in a concise coherent statemethod and give some results and then a non-perturbative and systematic coherentstate approximation is pointed out to solve the Spin-Boson model.

在这篇论文中，我们首先研究了无旋波近似的J-C模型，给出一些简单的结果，然后在耗散二态系统的研究过程中，给出一套非微扰的、系统的方法-相干近似法。

The composite scattering between dielectric sea surface and a conducting plate above it is calculated by using Physical Optical method and reciprocity theorem. Meanwhile, the dependence of the plate size on the composite scattering field is considered. The Doppler spectrum and the chaotic characteristic for the time series of composite scattering field are analyzed. Finally, artificial neural networks and wavelet analysis are introduced into the study of the sea clutter to realize the purpose of target detection, the factors which affect the detection of the target are discussed and the solutions to these problems are given.

同时利用物理光学近似结合互异性原理计算了介质粗糙海面与其上方导体运动平板的复合散射，考虑了平板尺寸对复合散射场的影响，并对复合散射场时间序列进行了多普勒谱分析和混沌分析，最后将人工神经网络和小波分析引入到海杂波的分析当中，实现了海杂波中目标探测的功能并讨论了影响目标探测功能的因素以及解决这类问题的方法。

It is discussed to recondition the coefficient matrix and to treat the domain with several media.Then external wavelets are used to deal with mixed boundary conditions, which simplifies the disposal of boundary conditions and improves the accuracy of approximate solutions.

讨论了系数矩阵的预处理技术和多介质问题的处理方法；在混合边界条件的处理中使用了外小波，既简化了边界条件的处理，又提高了近似解的精度。

Because of the grid division adopted the approximate regular hexahedron unit,the displacement function adopted the as high as 9th ordered polynomial function the high pre...

由于网格划分采用了近似正六面体单元，位移函数采用了高达9次的多项式函数，通过自适应收敛的方法，得到了高精度的收敛结果。

Firstly, this paper uses the method of renormalization group to deal with the Ising Model of equilibrium phase transition and calculate and compare the critical index of the model of square cell with different lattices, which leads to the finding that the size of Kadanoff cell have greater influence on the approximate treatment of interactions between cells.

本文首先用重正化群方法处理了平衡相变的Ising模型，计算了不同格点数的正方形元胞模型的临界指数并进行对比，发现Kadanoff 元胞的大小对元胞间相互作用的近似处理影响较大。

This paper studies the model -robust design problem by applying the reproducing kernel space approach.

利用再生核空间方法研究相依误差近似回归模型的稳健设计问题。

In part 1 of this work, the analysis of results computed by the reproducing kernel particle method reveals that the support size of kernel function is a sensitive parameter in computing a violent displacement field.

为了弱化紧支域尺寸的选取对计算结果的影响，以节点约束的形式构造一种形函数对位移场进行近似。一维位移场的计算实例表明方法能有效的弱化覆盖尺寸对计算结果的影响。

However, the calculation of the zero order correction of the DNLS/MNLS equation is intricate. We develope a symbolic computation technique to calculate them, based on the residue theorem.

但DNLS／MNLS孤子在微扰下的零级近似已经非常复杂，我们基于留数定理总结出一套有广泛适用范围的符号计算方法。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。