CMP_Modulation2

说明：  malloc项目第三阶段：优化，用哈希表实现，同时加深对数据结=结构的理解(malloc Project Phase III: optimization, with the hash table to achieve at the same time deepen the understanding of the structure of the data node =)

二维功率谱密度换算一维功率谱密度的程序,对表面质量的计算尤为使用(two dimensional power spectral density to one dimensional psd)

矿用电机车电控系统有两种,一种是有触点的电控系统,另一种是脉冲调速系统。以晶闸管为主要元件的脉冲调速系统在矿用电机车中仍大量使用。晶闸管属于半控型器件,其控制极只能控制开通而不能控制其关断,在低速运行时,晶闸管一经导通后,如果不能根据需要关断,则电动机承受全部电压而失去控制,电机车全速运行。本文利用MATLAB软件对矿用电机车晶闸管脉冲调速系统的主电路进行建模并仿真,对影响安全运行的关键元器件进行了详细的分析。仿真结果表明晶闸管脉冲调速系统存在安全隐患。随着电子工业的飞速发展,一种新型的全控型电力器件(绝缘门极晶体管IGBT)开始在工业中得到广泛的应用,脉冲调速电控系统如采用全控型电力器件代替半控型元器件(晶闸管),将会大大简化控制电路。由于控制电路简单,便于实现数字化控制。本文对IGBT的调速原理进行分析,采用IGBT和集成PWM脉宽调制器SG3525为主要元件,设计出了双闭环可逆自动调速系统,并对该系统进行实验验证,实验结果表明该系统优于晶闸管直流调速系统,而且运行稳定,可以很方便实现可逆运行。(Mine electric locomotive electronic control system has two types of electronic control system with contacts, and the other is the pulse speed control system. The pulse thyristor as the main component in the mining electric locomotive speed control system is still widely used. A semi-controlled thyristor type devices, the control can only control a very open and can not control the turn-off, in the low speed, the thyristor turn-on once, if not turned off as needed, then the loss of the motor under full voltage control, motor vehicle running at full speed. In this paper, MATLAB software mining electric locomotive speed control system pulse thyristor main circuit modeling and simulation, the key components of the safe operation of a detailed analysis. Simulation results show that the thyristor pulse control system security weaknesses. With the rapid development of the electronics industry, a new full-controlled power devices (Insulated Gate Transistor IGBT) began to be widely used in indu)

模型参考自适应控制的Matlab实例，仿真模拟闭环跟踪方波输入 关键字：模型参考自适应控制 Matlab 例程(An Matlab example of model reference adaptive control.Simulate the closed-loop system to follow a square reference signal. Keywords:Model Reference Adaptive Control, Matlab, Example)

Thresholding is used to segment an image by setting all pixels whose intensity values are above a threshold to a foreground value and all the remaining pixels to a background value. Whereas the conventional thresholding operator uses a global threshold for all pixels, adaptive thresholding changes the threshold dynamically over the image. This more sophisticated version of thresholding can accommodate changing lighting conditions in the image, e.g. those occurring as a result of a strong illumination gradient or shadows.

MATLAB 工具箱，可用于惯性导航的常用模拟，包括器件误差、平台误差、纯惯导解算、惯导与GPS融合、惯导与DR融合、初始对准等滤波算法(Filtering algorithm MATLAB toolbox can be used to simulate conventional inertial navigation, including device error, error platform, Inertial Navigation solver, INS and GPS integration, integration of INS and DR, initial alignment, etc.)

模仿南极星写的一个编码转换工具，日文，中文，uf8之间的转换。当初为了写这个工具调查了很多资料。难得的，很少人写这方面的东西。花了不少时间。(NJStar imitate write a code conversion tool, Japanese, Chinese, uf8 conversion between. We had to write this tool to investigate a lot of information. Rare, very few people write things in this regard. Spent a lot of time.)

這是一款好用的 streaming 軟體，重點還是免費的(This is good for streaming software, the focus is still free)

动画 uivie 大小变化 uiView的变化(Changes in the size of the animation uivie changes uiView)

Cramer-Rao下界的例子，其中信号为chirp(Cramer-Rao lower bound for example, where the signal for the chirp)