PMSM_3HP_drives

说明：  平均周期图法和平滑平均周期图法估计功率谱 从经典功率谱估计周期图法原理入手，从理论上分析了其存在的局限性，借助Welch算法对其进行修正。依靠Matlab强大的数值分析和信号处理能力进行实验!! 用周期图法和welch法分别估计了一下信号的功率谱密度。采样频率200Hz，时间序列长度2048，FFT数据点数2048。其中welch法使用hanning窗，窗口长度600．(Average periodogram and periodogram smoothing method to estimate the average power spectrum from the classical power spectrum estimation periodogram principle starting from the theoretical analysis of the limitations of its existence, with the Welch algorithm, amending them. Rely on the powerful Matlab numerical analysis and signal processing capabilities to experiment!! With periodogram and welch method were estimated signal power spectral density about. Sampling frequency of 200Hz, the time sequence length 2048, FFT data points 2048. Welch method which uses hanning window, the window length of 600.)

轴承故障信号vmd分解及输出频谱图和幅值图，内含main、vmd及输出频谱图和幅值图三个程序，直接用main就行(VMD decomposition of bearing fault signal and output spectrum and amplitude diagram)

lib svm is support vector machine which can be used in classification and regression test. thanks for open source

matlab工具包，非常有用的信号时频分析工具,stft,doppler(matlab toolkit, a very useful time-frequency analysis tools, stft, doppler)

this code is a matlab code for smithchart that I onlt modify this but this is very useful for communication enginnering

完备经验模态分解，是EEMD的改进算法，有效的减小了模态混叠现象。(Complete empirical mode decomposition is EEMD improved algorithm effectively reduces the modal aliasing. .)

this is a code for at89c5131 usb supprt micro. this code shows communication protocols to of USB in micro. this code can be used by at89c5131 and use Matlab USB code which I uploadto communicate Simulink of Matlab to a micro via USB.Enjoy it!

线性反演方法中的马夸特反演算法 matlab程序(Linear inversion method of Marquardt inversion algorithm matlab program)

自动控制原理非常重要的内容之一：根轨迹法分析系统的性能(One of the very important principle of automatic control: root locus analysis system performance)

ofdm信道估计，用ls和dft的不同的方法进行了比较，有ber曲线(ofd channel estimation)