Example-of-Supercritical-Hopf-bifurcation

这是中国数学建模中编程交流上分治算法内容，里面提供了很多分治算法的例子(This is the exchange of mathematical modeling in the programming content on the divide and conquer algorithm, which provides many examples of divide and conquer algorithm)

偏最小二乘（PLS）算法建模，并提供一个实例分析，提供正常过程监控Q统计量和T统计量。(Partial Least Squares (PLS) algorithm modeling, and provides a case study to provide normal process monitoring Q statistic and T statistics.)

利用Newmark,中心差分法计算结构动力反应(Using Newmark, central difference method to calculate structural dynamic response.)

用于分析带约束问题的输出结果,加上约束的粒子群算法功能有很大改善(Used to analyze the problem with constraint output, coupled with constrained particle swarm optimization function has greatly improved)

This work is done by someone else. I m only uploading it to share with you.

说明：  Morlet小波计算视频图函数封装，可以快捷简单地调用分析数据(Morlet wavelet video map calculation function of packaging, you can call the analysis of data quick and easy way)

这是基于MATLAB的偏微分方程的腐蚀算子！(This is based on the partial differential equations MATLAB corrosion operator!)

产生随机信号观测样本，不同信噪比和归一化频率。用Leivison-Durbin迭代算法求解AR模型的系数并估计功率谱。(Generate random signal observation samples, different signal to noise ratio and normalized frequency.Use Leivison- Durbin iterative algorithm of AR model coefficients and estimate the power spectrum.)

转速开环直流电机调速 电机拖动与自动控制系统及其simulink仿真(Drive and automatic control system and its Simulink simulation of DC motor speed control motor)

录制自己的一段语音，时间控制在15秒到30秒左右；利用wavread函数对自己的语音进行采样，记住采样频率。 （1）画出原始语音信号的时域波形，而后以1秒为间隔，求出每秒数据的功率谱。 （2）根据语音信号特点，分别设计FIR及IIR滤波器，分别画出滤波器幅频和相频特性曲线。用设计的滤波器对信号滤波，画出滤波后时域波形。用sound函数回放语音信号。 （3）求出特征频段语音信号随时间变化的曲线（每间隔0.05秒求一次功率谱）。 (Record your own voice for some time (15 seconds to 30 seconds) use wavread function of the voice samples, remember the sampling frequency. (1) Draw the original speech signal in time domain waveform, and then to 1 second intervals, the data obtained power spectrum per second. (2) According to the voice signal characteristics, FIR and IIR filters were designed, namely to draw the amplitude and phase frequency characteristic curve. With the design of the filters on the signal filtering, to draw the filtered time-domain waveform. Playback with sound function of the speech signal. (3) Find the characteristic band speech signal curve over time (0.05 seconds intervals seeking a power spectrum.))