SAMP

Welch功率谱密度是用改进的平均周期图法来求取随机信号的功率谱密度估计值。Welch法采用信号重叠分段、加窗函数和FFT算法等计算一个信号序列的自功率谱估计(PSD如上例中的下半部分的求法)和两个信号序列的互功率谱估计（CSD）。MATLAB信号处理工具箱函数提供了专门的函数PSD和CSD自动实现Welch法估计，而不需要自己编程。(method of power spectral density plot )

一些小程序，仅供参考，不足之处，请见谅。谢谢你的支持。(Some small programs, reference, deficiencies, please forgive me. Thank you for your support.)

说明：  振动的模拟的matlab源程序，来源于网络, 谢谢大家！(vibration source Matlab simulation, and from the network, thank you all!)

fbg delay simulation source code

逆变器具有灵活、高效的特点，是新能源并网的主要接口。当多个逆变器连接到电网的同一个公共连接点时，逆变器非理想的电源特性，使得逆变器之间、逆变器与电网之间存在的谐波交互作用可能引发谐振， 使系统出现过电压、 过电流现象影响电网的电能质量，甚至威胁系统的安全稳定运行(Inverter is flexible and efficient, and it is the main interface of new energy integration. When multiple inverters are connected to the same common connection point of the power grid, the inverter is not ideal. The harmonic interaction between the inverters, the inverter and the grid may cause resonance, which causes the overvoltage and overcurrent to affect the power quality of the power grid and even threatens the safety of the system. stable operation)

属于马尔科夫蒙特卡洛仿真的一种快速收敛方法gibbs抽样(A fast convergence method gibbs sampling belonging to Markov Monte Carlo simulation)

在MATLAB下的一个对基带信号的采样变频至中频。GSM基站的接收频段为890～915 MHz。(A baseband signal sampling frequency to frequency under MATLAB. Receiving frequency band GSM base station is 890 ~ 915 MHz.)

使用matlab提取hsv颜色特征 这里是其源代码(use matlab to extract the hsv feature)

说明：  进退法，也成成功--失败法，是最优化方法的一种，用于确定区间(Advance and retreat method, have become a success- failure of law is a kind of optimization method used to determine the range)

首先，对太阳能光伏电池的基本原理和I-V、P-V特性进行分析。其次，建立电池的等效电路并初步设计仿真模型。(First, the basic principle and IV, PV characteristics of solar photovoltaic cells for analysis. Secondly, the establishment of the equivalent circuit of the battery and the preliminary design of the simulation model.)