chengxu

双馈风机的仿真模型搭建，由转子侧网侧和并网运行三部分组成。(The simulation model of the double-fed fan is composed of three parts: the rotor-side network side and the grid-connected operation.)

说明：  无线传感网络matlab建模的程序文件 很有参考性(Matlab modeling wireless sensor networks is very informative program files)

内含心电信号数据及运用MATLAB写的源代码，是国外的成品模型，小波包分析提取振动信号中的特征频率。( ECG data and includes source code written in MATLAB, Foreign model is finished, Wavelet packet analysis to extract vibration signal characteristic frequency.)

说明：  使用MATLAB,对基于IFFT/FFT实现的OFDM系统进行仿真(The use of MATLAB, based on IFFT/FFT in OFDM system to achieve simulation)

四边简支，受两个集中荷载的薄板弯矩及挠度分析程序，利用的弹性力学薄板理论。(Simply supported by two thin plate bending and concentrated load deflection analysis procedures, the use of thin elastic mechanics theory.)

讲述最优化问题，matlab优化工具箱，matlab编程，侧重于优化算法的matlab实现(About the optimization problem, matlab optimization toolbox, matlab programming, focusing on the optimization algorithm matlab implementation)

针对信号自适应chirplet分解未知参数多、实现起来比较困难的特点，文献[1]提出了一种新的chirplet分解快速算法。该算法利用计算信号的二次相位函数，得到其能量分布集中于于信号的调频率曲线上的结论，此时通过谱峰检测可同时获得chirplet调频率、时间中心和幅度的估计；然后通过解线性调频技术获得其初始频率和宽度的估计，仿真结果验证了本文算法的有效性。 (For the signal adaptive the chirplet decomposition of unknown parameters to achieve difficult to literature [1] proposed a new fast algorithm for chirplet decomposition. The algorithm makes use of the secondary phase of the calculated signal function, the conclusion focused on energy distribution curve to tune the frequency of the signal by the peak detection chirplet tune frequency, time center and amplitude estimates then by solving chirp technology to obtain the initial frequency and width is estimated that the simulation results demonstrate the effectiveness of the proposed algorithm.)

采用小波变换稀疏方法和正交匹配跟踪算法处理图像(Sparse wavelet method and orthogonal matching tracking algorithm)

用MATLAB编制的威赫斯特模型 可以用于灰色预测(Compiled with MATLAB can be used for gray prediction model Weihesite)

load flow analysis and fault analysis of power system. electrical power verses load angle (delta) plot for different values of Pe. calculation of initial, maximum and critical load angles for the given power system