DAC_original

优秀论文及配套源码。电压暂降是动态电能质量问题中最受关注的热点之一。大量新型电力电子设备的广泛使用对电网电能质量的要求越来越高，而且电压暂降在电网中又具有一定的传播性。因此，无论从电网还是用户都迫切需要对电压暂降进行研究和治理。对电压暂降的检测是解决电压暂降的前提条件，故本论文主要对电压暂降的检测方法进行研究。 本文分析了国内外短时电能质量扰动检测的研究现状，并着重讨论了短路故障、感应电动机启动和变压器激磁三种电压暂降扰动情况下电压暂降的特性；在此基础上选择了基于S变换的短时电能质量扰动检测方法，从S变换的结果S模矩阵及S复矩阵中提取出所需数据并以此来对各种扰动情况下的电压暂降的幅值、相位跳变、持续时间和谐波含量进行分析。仿真结果表明，该方法很好地实现了对电压暂降各特征量的检测。 (The voltage sag is one of most hot topics in dynamic electric energy problems. Masses of new power and electron facilities have been put into use widely, requiring a high quality of electric network and power, chiefly the voltage sag. Moreover, the voltage sag can spread in the electric network. So people have every reason to research and control the voltage sag. However, before developing the voltage sag, people have to detect it. On account of the above, this essay will chiefly focus on the detect methods of the voltage sags. In this paper, the status of the short duration power quality disturbance based on the different method are researched firstly, and emphasizes the characteristic of the voltage sag under the situation of the three kinds of voltage sag disturbances like the short circuit fault, induction motor start-up and transformer excitation. On the basis of the above, the short duration power quality disturbance detection method based on S transform is chosen. The complex m)

Extended Kalman Filter MATLAB code

在故障诊断中，对振动信号进行小波分析时候需要用到的小波尺度谱应用程序。(In fault diagnosis, wavelet analysis for vibration signal when the need to use the application spectrum of the wavelet scale.)

小波变换的基本原理仿真附加部分，包含方波信号多级离散小波处理结果及其应用( The basic principle of wavelet transform simulation additional portion comprising a square wave signal of multi-level discrete wavelet processing results and its application)

support vector machine

ITD法模态识别，基于自由振动曲线进行的模态识别(modal analysis)

这是一种二阶盲源分离算法，算法速度快，程序简单。(This is a second-order blind source separation algorithm, the algorithm fast, simple procedure.)

激光扩束准直程序，非常好用，我花很大功夫做出来的，希望对大家有用！！！！！！！(Collimated laser beam expander procedure, very easy to use, I have spent great efforts to do so, I hope useful for everyone! ! ! ! ! ! !)

解决水库大坝岸坡涌浪问题，涌浪向滑坡点上下游扩散的matlab实现。(Solve the problem of dam slope swell, swells to landslide on the downstream point spread matlab.)

Occam2-D fortan的二维反演(Fortan the OCCAM two-dimensional inversion)