Two-phase Fractional Flow Analysis of Aeroengine Main Bearing Inner-ring Oil-flow System 航空发动机主轴承环下供油系统两相分相流动分析
Fractional desorption gas analysis 分馏退吸法气体分析
The Fractional Dimensions of Signal Analysis 信号的分维分析
Multiplicity of the Definition of Fractional Fourier Transforms and Analysis on Their Optical Implementation 分数阶傅立叶变换的多种定义形式及其光学实现系统分析
The Fractional Fourier Transform and Matrix Group and The Time-Frequency Analysis 分数Fourier变换、矩阵群和时-频分析
By Comparing this method with Maximum Likelihood Estimation of the fractional Brownian motion, both theoretical analysis and experimental results demonstrate its effectiveness and rapidity. 与分数布朗运动最大似然估计方法相比,理论分析和实验结果都表明,该方法估计效果良好且速度快,适于实时参数估计。
In fact, the fractional Brownian motion has already been successfully applied to hydrology, network traffic analysis, finance as well as various other fields. 事实上,分数布朗运动已经被广泛应用于水文学、随机网络、金融等各个领域。
In 1980, Namias introduced the theory of fractional power of Fourier transform, a generalized Fourier transform, called FrFT ( Fractional Fourier transform), which is a new Time-Frequency analysis tool. Fourier变换的分数幂理论最早由Namias于1980年建立,他将这种推广的Fourier变换称为FrFF。FrFF是一种新的信号时频分析工具。
Because of that, fractional transform has the advantage as general time-frequency analysis tool has while using in the broadband interference suppression, even more, the computation of fractional transform is much less. 正因如此,与一般研究工具相比,分数阶变换在处理宽带干扰时具有一般时频分析工具所具有的优点;而与一般的时频分析工具相比,分数阶变换更有计算量小等优点。
Finally, an improved algorithm for fractional harmonic analysis is used to reduce the leakage, the result of the simulation shows it can heighten the precision of the measure of the parameter. 最后,对于非整数次谐波的测量用改进算法来减少频谱泄漏,仿真结果表明,改进算法能较大的提高参数测量的精度。
A Mathematical Morphology Method for Estimation of Fractional Dimension in Texture Image Analysis 数学形态学用于纹理图像的分维估计
A Fractional Step Finite Element Method Based on Taylor Expansion-Stability and Accuracy Analysis 基于Taylor展开的分步有限元格式
Although these climate data were measured in different physical units and reflect different time scales, fractional analysis allows for a mathematical comparison of them, which will reveal climatic significance contained in different information sources. 虽然这些气候指标是用不同物理单位测量并在不同时间尺度记录的,但分形分析可对它们进行数学比较,从而揭示出不同信息源所包含的气候意义。
The Fractional Fourier Analysis of Multicomponent Chirp Signals with Unknown Parameters 含未知参数的多分量Chirp信号的分数阶傅里叶分析
Algorithm and Implementation of Fractional-Harmonic Analysis 分数次谐波分析的算法及其实现
Fractional Multipole Model Used in the Characteristic Analysis of a Transmission Line 用于传输线特性分析的分数阶多极子模型
A computationally effective fractional Predictor-Corrector method is proposed, and a detailed error analysis is derived. 我们提出一种计算有效的分数阶预估-校正方法,导出了其误差估计。
Fractional transforms is a new time-frequency analysis tool which be paid close attention of late years, which gained by the fractional though expanded in all sort of conventional transform. 分数阶变换是近年来引起人们关注的一种新的时频分析工具,是分数阶化思想在各种传统变换中推广得到的新的变换形式。
Fractional Fourier transform as a new time-frequency analysis method, is the generalization of classical Fourier transform, has a close relation with the time-frequency analysis and also provides a certain characteristics which Fourier transform do not have. 分数Fourier变换作为一种新的时频分析方法,是对经典Fourier变换的推广。它既与经典的Fourier变换有着天然的联系,又提供了Fourier变换所不具备的某些特点。
In this paper, viscoelastic fractional derivative ( VFD) model is used for the first time in dynamic analysis of SRM, and various verification tests are carried out. 本文首次将粘弹性分数阶导数(VFD)模型用于发动机的动力学分析,并进行了多种试验验证。
The concept of fractional distance and max-fractional distance are studied in order to analysis the performance of the LP decoding. 同时,研究采用分数距离和最大分数距离来分析线性规划译码性能的方法。
The Fractional Fourier Transform ( FRFT) as a new non-stationary time-frequency analysis method, which is very suitable for dealing with LFM class signal, and it is a linear time-frequency analysis method, there is no cross-term interference problem. 而分数阶Fourier变换(FRFT)作为一种新兴的非平稳时频分析方法,非常适合于处理LFM类信号,且它是一种线性的时频分析方法,不存在交叉项干扰问题。
Taking the fractional unified systems as the model, adopting the methods of theory analysis and numerical simulation, the dynamic characteristic, synchronization control and its application of fractional unified chaotic system are studied. A dynamic simulation new method to analyze fractional-order systems is discussed. 本文以分数阶统一系统为研究对象,采用理论分析和数值仿真相结合的方法研究了分数阶统一系统的动力学特性、同步控制及其应用。研究了分析分数阶系统的动态仿真新方法。
In chapter 2, a detailed description of the collocation method of linear fractional ordinary differential equation is given. The consistency, convergency and stability analysis of the method are also provided. 在第二章中给出了求解线性分数阶常微分方程的配置方法,获得了方法的相容性,收敛性和稳定性的理论结果。
A novel algorithm of blind separation was deduced based on fractional lower order moments for underwater acoustic signals. Theoretical analysis and computer simulation show that the new blind separation method is robust under various noise conditions. 在此基础上,推导出一种基于分数低阶矩的水声信号盲分离新方法,理论分析与仿真检验表明新的盲分离方法具有较强的鲁棒适用性。
The Intelligent Optimization Algorithms, such as Ant colony Algorithm, are employed to solve the inverse fractional viscoelastic problems due to the difficulty of sensitivity analysis, but they are required to solve direct problem repeatedly which lead to a considerable amount of computing cost. 在分数阶粘弹性反问题的求解中,由于敏度分析较为困难,一般需利用蚁群算法等智能类优化算法进行计算,而这类算法需多次求解正问题,计算成本颇大。
An algorithm of fractional step on alternative analysis on solid and fluid domains is adopted to simulate the process for the stem to achieve its balanced position. 采用固体域与流体域的分步交替算法,计算阀杆的平衡位置。
Study the suppression algorithm of chirp interference based on Short Time Fourier Transform and Fractional Fourier Transform, using time-frequency analysis theory. 利用时频分析理论,讨论了基于短时傅里叶变换和分数阶傅里叶变换的扫频干扰的抑制算法。