查询词典 asymptotic convergence

The algorithm minimizes the hardware requirements and computation complexities, but it has a bias of the notch frequency after convergence.

该算法运算简单，但收敛后存在陷波频率偏移的不足。

Frequency offset, convergence time, phase noise and hardware cost are the most important factors for algorithm selecting. First, the carrier recovery loop is divided into two parts, frequency recovery loop and phase recovery loop.

由于载波恢复需要捕获较大的频偏范围、较短的收敛时间、较小的相位噪声和较低的硬件实现成本，所以本文从这四个方面考虑算法的选择。

For the novel passive detecting radar system,an algorithm based on the existing algorithm of Doppler changing rate is presented to improve the locating accuracy and convergence rate.The Doppler frequency is adopted as the observed quantity,at the same time the EKF algorithm is introduced to process the initial locating results.

针对新型无源探测系统的要求，在原有多普勒频率变化率无源定位算法的基础上，为提高定位精度和收敛速度，提出了增加多普勒频率作为观测量，同时引入EKF算法对原始定位结果进行了处理。

Using feedback weight adjusts timely the step during iterating procedure, fastens convergence rate of frequency adaptive filtering. Similarly this method can also achieve the purpose of suppressing interference and improving the performance of DSSS system.

其优点是利用权值反馈不仅在权值迭代过程中实时调整更新步长，实现算法的快速收敛，同时达到有效地抑制多个强干扰的目的，使输出信号的平均功率更接近于扩频信号功率，改善了DSSS系统的性能。

This paper makes a three-dimensional model for QCM and analyzes directly the coupled phenomenon of the structural and electric fields of QCM with finite element analysis software ANSYS10.0. Through analyzing the convergence of the resonant frequency of QCM, the correctness of the finite element analysis is proved. The influence of different sizes of electrode on vibration of QCM and an optimal size of electrode is discovered, namely thickness of 100 nm and radius of 3 mm. The design of mesa on crystal plate is provided to solve the problem that the energy trapping is not good enough. This design proves valid based on finite element calculation and an optimal size of the mesa is given, namely height of 9.8 μm.

基于有限元分析软件ANSYS10.0对石英晶体微天平进行三维建模，验证了建模的正确性，并对不同电极结构尺寸进行仿真计算，对出现的耦合情况进行了分析，通过实验结果对比，提出较佳电极尺寸结构为厚度100 nm，半径3 mm；为解决金电极能陷效应不够理想的问题，提出在晶片上下表面筑平台的设计，有限元计算结果表明此设计能改善电极区的能陷效应，并且较佳平台高度为9.8μm。

In order to measure the evolutional process, the judgment formula of convex-concave and convergence power of evolutional grey sequence are deduced, and the computation and graph methods of evolutional grey iteration are designed.

本文提出了一种新的软件工程方法&竞赛软件工程&，这是一个软件质量进化度量的过程框架。为度量这个进化过程，鬃者推导出灰序列凸凹性判断公式和收敛阶公式，并设计出计算判别法和图解判别法。

As a practical application of the research results in this paper, the feasibility of applying robust exponential convergence to cotton-picking robot is studied with the parallel axis binocular computer vision model, and the research results show that even with large modeling errors, the controlling manipulator also has good dynamic property and sufficient high stability.

最后本文进行了基于平行光双目视觉模型和鲁棒指数收敛法的机械手采棉可行性研究；研究结果表明，在存有较大模型误差的情况下，机械手仍然具有良好的动态特性以及足够的稳态精度，本文研究的控制方法能够用于采棉机械手。

And, by adding the self-adaptive temperature decay coefficient, made the SA algorithm could auto-tune the search criteria according the environment, avoid the deficiency of premature convergence.

针对微粒群优化算法在求解作业车间调度问题时存在的易早熟、搜索准确度差等缺点，在微粒群优化算法的基础上引入了模拟退火算法，从而使得算法同时具有全局搜索和跳出局部最优的能力，并且增加了对不可行解的优化，从而提高了算法的搜索效率；同时，在模拟退火算法中引入自适应温度衰变系数，使得SA算法能根据当前环境自动调整搜索条件，从而避免了微粒群优化算法易早熟的缺点。

the effect of inertia weight on particle swarm optimization is studied,on basis of which adopts four kinds of strategies of inertia weight to regulate the speed of a new quantum delta potential well based particle swarm optimization.a faster and more stabile algorithm,found by comparing the performances of four equations regulated the inertia weight,solves 0/1 knapsack problem.the result of experiment shows that the modified algorithm improves the precision of optimal solution and has a faster speed and a higher efficiency in convergence.in a word,choosing a parameter of inertia weight suitably can improve the performance of new qdpso.

摘 要：在研究惯性权重对基本pso算法影响的基础上，根据惯性权重对粒子群算法影响的特点，采用4种惯性权重策略对一种新的具有量子行为的粒子群算法的速度进行调节，比较每种算法的性能，从中找到一种新的性能更好的改进算法，将其用于求解0-1背包问题。实验结果表明较好地选择惯性权重参数对算法的性能有很大提高，该改进算法在求解0-1背包问题中具有高效性，提高了最优解的精度，同时具有较快的收敛速度。

To facilitate the comparison of various GAs, this dissertation defines the capability that a GA can find the optimal solution, the convergence speed, and the threshold of difference and significant difference.

为了便于不同遗传算法之间的相互比较，本文定义了遗传算法发现最优解的能力和收敛速度，以及差异与显著差异的范围。

The shaping method of noncircular part and the tool holder's radial motion characters in noncircular turning process are discussed in detail in the thesis.

论文详细研究了非圆零件的成型方法和加工过程中刀架的径向运动规律。

I have not really liked him,I do not like his this kind of disposition.

我没有真的喜欢他，我不喜欢他的这种性格。