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51的CRC代码-51 CRC code

基本功能： 一次上传多个文件。 允许得到上传的文件的原文件名，并可以将文件改名存入服务器。 允许设定每次上传文件的总大小，和单个文件的文件大小。 可以设定只被允许文件后缀名列表。 可以设定只被允许的文件类型列表。（注：从文件格式分析，比只分析后缀名更加准确。） 可以设定是否覆盖服务器上同名文件。 可以将所有文件上传到一个文件夹，也可以程序员的需求将文件分类存入不同文件夹。-basic functions : a multiple files to upload. Allowing the documents to be uploaded to the original file name and file name can be credited to the server. Upload allow each document set the total size of individual files and the file size. Can only be allowed to set the file extension from the list. Can only be allowed to set the file type list. (Note : file format, rather than suffix analysis more accurate.) Whether the coverage can set the server name on the document. All documents can be uploaded to a folder, programmers can also demand documents classified into different folders.

目前的代码是一个matlab函数，它提供给定信号x[n]的短时傅立叶变换（stft）。该函数是matlab命令“光谱图”的一个替代项。功能输出为： 1）一个具有复杂stft系数的矩阵，该矩阵具有跨列时间和跨行频率； 2）频率矢量； 3）时间矢量。 为了阐明函数的用法，给出了一个示例。为了方便起见，输入和输出参数在函数的开头给出。(The present code is a Matlab function that provides a Short-Time Fourier Transform (STFT) of a given signal x[n]. The function is an alternative of the Matlab command spectrogram The output of the function is 1) a matrix with the complex STFT coefficients with time across the columns and frequency across the rows; 2) a frequency vector; 3) a time vector. An example is given in order to clarify the usage of the function. For convenience, the input and output arguments are given in the beginning of the function.)

说明：  三电平逆变器的Simulink模型，调制方式采用SPWM。(The Simulink model of three-level inverters adopts SPWM as its modulation mode.)

说明：  SLE 4418 / SLE 4428 Intelligent 8-Kbi t EEPROM

说明：  红外光谱会发生基线偏离，用多项式拟合方法可以消除基线偏离。(Infrared Spectrum Baseline Correction)

基于STM32 上开发的BMS系统 包含电池均衡 温控 故障告警信息(BMS system based on STM32 Including battery equalization temperature control fault alarm information)

实现了数字波束形成算法，可以实现静态扫描。(The digital beamforming algorithm is realized, and the static scanning can be realized.)

AWGN信道下的极化码实现，有参考文献，代码有中文注释，N=2048(Polar Code Constructions for the AWGN Channel)

说明：  针对风电场输出功率的强波动性对交直流互联电网调频的影响，提出了基于协作式分布式模型预测控制的交直流互联电网调频控制方法，以提高风电经交直流通道外送互联系统的频率稳定性，克服集中式模型控制方法扩展性差的缺点，该控制策略具有全局最优解。(Aiming at the influence of strong fluctuation of wind farm output power on frequency modulation of AC/DC interconnected power grid, a frequency modulation control method for AC/DC interconnected power grid based on cooperative distributed model predictive control is proposed to improve the frequency stability of wind power interconnected system via AC/DC channel and overcome the poor expansibility of centralized model control method. The disadvantage of this control strategy is that it has a global optimal solution.)