查询词典 approximating

Aimed at the problem of choosing the initial value when the Newton method is used to compute the controlling unstable equilibrium point, a practical and rigorous solving scheme was presented: by identifying the controlling load bus of the given fault, and using the Thevenin equivalent circuit to represent the rest of the system at the state of the post disturbance stable equilibrium point, using the steady equivalent circuit to represent the induction motor in composite load, and then using the torque characteristics of induction motor, a point near the CUEP is gained to be the initial value. The second order normal forms was used to approximate the stable manifold of CUEP, and the local approximating boundary of the region of attraction of the post disturbance stable equilibrium point was gained. Then just by simulating the state of the system at the fault clearing time, the transient voltage stability of the system could be determined.

针对采用牛顿法求取故障后系统主导不稳定平衡点(controlling unstable equilibrium point，CUEP)存在的初值选取难题，提出一种实用但不失严谨的解决方案：通过识别给定故障的主导负荷母线，对主导负荷母线以外系统由故障后稳定平衡点处的状态进行戴维南等值，对负荷中感应电动机部分采用其稳态等值电路，再由感应电动机的转矩特性求得CUEP附近的一个点作为近似的CUEP，以此为迭代初值可靠求得CUEP；采用二阶正规型来近似CUEP的稳定流形的方法求得近似的局部吸引域边界；由仿真得到故障清除时刻系统的状态并根据该状态是否位于吸引域内判断系统的暂态电压稳定性。

The algorithm for constructing the approximating model of the Markov chain of an Ito stochastic differential equation is discussed.

探讨了构造伊藤随机微分方程的马尔可夫链近似模型算法。

Using the approximating model, the near-optimum or suboptimum of real systems can be only obtained.

因此，具有良好动态品质的最优控制已经引起人们的关注。

Based on these split models, some incontinuous problems during the process of approximating the triangular Bezier surface by a group of plane triangles were presented and solved.

提出了Bezier三角曲面在分割和线性近似过程中的不协调性判别法则和处理方法。

Being able to look at the paragraphs on the screen in an approximating of the font yin which they will appear in the book wan also instructive. You can see problems that aren't appear in a double-spaced Courier typescript.

屏幕上文稿所用的字体与以后印在书籍中的字体非常接近，因此，通过电脑屏幕上检查一段文字大有好处，你可以发现一些在双倍行距的柯里尔打印稿中并不明显的问题。

By using the uniform convergence and invexity the continuity of the approximating set of Pareto solutions of the problem is obtained.

在一致收敛性和不变凸性的条件下得到了近似有效解集的连续性。

In the forth chapter, the convergence problem of three Ishikawa and modified three Ishikawa iterative sequences under uniformly continuousΦ-strongly pseudo-contractive mapping and approximating pseudo-contractive mapping is

第四章主要讨论了三重迭代序列以及修改了的三重迭代序列在一致连续的Φ-强伪压缩映射、渐近伪压缩映象下的收敛问题，给出了其判别准则和结论描述。

And a conclusion that the small angle approximating is the precondition of sine wave magneto-optical modulation, and the constraint on angle can be relaxed applicably when sine wave magneto-optical modulation be used in measuring polarization was gained.

根据计算机模拟和实验研究的结果，对正弦波及方波磁光调制进行了比较分析，得出了方波磁光调制具有较大的应用价值和良好的应用前景的结论。

New multiscale methods can give better performance in approximating multivariate function in high-dimension space than wavelet analysis.6. A method for texture classification is presented based on Brushlet and dyadic wavelet.

该方法从矩特征和方向信息特征出发，结合Brushlet变换的方向检测特性和二进小波变换的边缘检测特性，最后利用支撑矢量机对纹理图像进行分类。

In Chapter 2, an algorithm for approximating circles and ellipses is first presented.

本文第一章对当前计算机图形学基础算法的研究状况及主要参考文献进行了综述。

He is the most remarkable man that I have ever known.

他是我知道的人中最值得注意的人。

Increased appearance of lymphocele was noticed in patients with diabetic nephropathy, congenital malformations of the urinary tract, and inflammatory diseases, including glomerulopathy and extraglomerular ones, after high-voltage radiotherapy and after removal of the renal graft.

经过高压放射疗法和切除移植肾后，在糖尿病肾病患者、泌尿系统先天性畸形患者和炎症患者身上发现淋巴囊肿有所增加，包括肾小球病和球外疾病等。