read

HHT主要内容包含两部分，第一部分为经验模态分解（Empirical Mode Decomposition，简称EMD），它是由Huang提出的；第二部分为Hilbert谱分析（Hilbert Spectrum Analysis，简称HSA）。简单说来，HHT处理非平稳信号的基本过程是：首先利用EMD方法将给定的信号分解为若干固有模态函数（以Intrinsic Mode Function或IMF表示，也称作本征模态函数），这些IMF是满足一定条件的分量；然后，对每一个IMF进行Hilbert变换，得到相应的Hilbert谱，即将每个IMF表示在联合的时频域中；最后，汇总所有IMF的Hilbert谱就会得到原始信号的Hilbert谱。(The main content of HHT includes two parts. The first part is Empirical Mode Decomposition (EMD), which was proposed by Huang, and the second part is Hilbert Spectrum Analysis (HSA). Simply speaking, the basic process of HHT processing non-stationary signals is: firstly, the given signal is decomposed into several intrinsic mode functions (represented by Intrinsic Mode Function or IMF, also known as intrinsic mode functions), which are components satisfying certain conditions; secondly, Hilbert transform is applied to each IMF. The corresponding Hilbert spectrum is obtained, that is, each IMF is represented in the joint time-frequency domain; finally, the Hilbert spectrum of the original signal is obtained by summing up the Hilbert spectrum of all IMFs.)

STM32F4 使用等精度测量法测量频率(STM32F4 Measures Frequency with Equal Precision Method)

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VC完美的界面换肤实例+源码，VC++界面换肤大多数仅仅提供Dll或者Lib，有代码的又有很多问题，这几日突然想到一个解决方案，有源码，有100多种皮肤可切换，就是采用Delphi里边成熟的界面组件vclskin，将它做成Dll来用，效果相当不错，调试源码注意事项： 　　1、实例中包含了所有的源代码，可以随便修改它，添加从资源加载皮肤，动态换肤的功能。 　　2、实例中的VclSkin4.93代码为其它公司成熟的产品，请下载后在24小时内删除。 　　3、皮肤有很多，可以到网络上下载，更有皮肤编辑工具，方便自定义。

程序中输出日志保存下来的好东西，只要调用里面的一个方法就可以将日志保存到硬盘上了(Preserved in the output log program a good thing, as long as there' s a method call can be saved to the hard drive on the log)

翻译 maninwest@Codeforge 作者:Sergey Nozhenko@CodeProject介绍：CoStream 是的 PipeStream 无缓存替代选择。背景在生产者/消费者模式下，如果我们知道一个消费者确定要读取stream 读到结束或者如果不能读到结束就处理，那么同步stream 就不需要维护自己的内部缓存，完全依赖于 Read 方法调用者的缓存。在Read 方法中，CoStream 保存到目标缓存的引用并等待，直至完成。而 write 方法从源缓存中复制数据到目标缓存，会给读取者发送信号缓存已准备就绪或者需要等待期 Read 调用（如果来源缓存中有未消耗的数据剩下或者返回到Writer 调用者）。使用代码CoStream 不能在单个话题中使用。应该至少有两个，读取和写入话题。两者都需要关闭（或处理）stream，一边对方可以继续到结束。测试程序在  XmlDocument 中加载了一些 xml 文件。然后将其写入到 CoStream 的实例Static CoStream costream = new TestCoStream(); static string outpath; static void Main(string[] args) { // ... XmlDocument doc = new XmlDocument(); doc.Load(args[0]); outpath = args[1]; var reading_thread = new Thread(ReaderBody); reading_thread.Start(); using (var pipe = XmlWriter.Create(costream, new XmlWriterSettings { CloseOutput = true })) doc.Save(pipe); reading_thre

说明：  AY90S2313 AVR Promer

说明：  H矩阵构造满足5G标准，编码译码为MATLAB2018b工具包(H matrix construction meets 5g standard)

说明：  在MATLAB环境下，分别建立了5、7、9级MMC直流传输模型，验证了CPS-SPWM模式的特性。结果表明，对于低电平MMC变换器，PWM具有良好的逼近调制波的能力，谐波分量少，等效开关频率低。(In the MATLAB environment, MMC DC transmission models of 5, 7 and 9 levels are built respectively, and the characteristics of CPS-SPWM mode are verified. The results show that for low-level MMC converter, PWM has a good ability to approach the modulation wave, with less harmonic components and less equivalent switching frequency rate)

说明：  STM8定时器的书写。库函数书写，很详细(Writing of STM8 timer. Library function writing, very detailed)