decision tree

USB1_1和USB2_0相关标准-技术指南-北京捷瑞电讯设备有限责任公司-USB1_1 and USB2_0 relevant standards- Technical Guide- Beijing Jierui telecommunications equipment limited liability company

This MATLAB code generates a square circulant matrix using the vector V as the first row of the result if V is a row vector or as the first column of the result if V is a column vector. V may be any numeric data type or a character string. -This MATLAB code generates a square circulant matrix using the vector V as the first row of the result if V is a row vector or as the first column of the result if V is a column vector. V may be any numeric data type or a character string.

小波包分析提取振动信号中的特征频率，实现串口的数据采集，有信道编码，调制，信道估计等。( Wavelet packet analysis to extract vibration signal characteristic frequency, Achieve serial data acquisition, Channel coding, modulation, channel estimation.)

粒子群算法，也称粒子群优化算法或鸟群觅食算法（Particle Swarm Optimization），缩写为 PSO， 是由J. Kennedy和R. C. Eberhart等开发的一种新的进化算法(Evolutionary Algorithm - EA)。PSO 算法属于进化算法的一种，和模拟退火算法相似，它也是从随机解出发，通过迭代寻找最优解，它也是通过适应度来评价解的品质，但它比遗传算法规则更为简单，它没有遗传算法的“交叉”(Crossover) 和“变异”(Mutation) 操作，它通过追随当前搜索到的最优值来寻找全局最优。这种算法以其实现容易、精度高、收敛快等优点引起了学术界的重视，并且在解决实际问题中展示了其优越性。粒子群算法是一种并行算法(Particle Swarm Optimization (PSO), also known as Particle Swarm Optimization (PSO), is a new evolutionary algorithm developed by J. Kennedy and R. C. Eberhart. PSO is a kind of evolutionary algorithm, which is similar to simulated annealing algorithm. It starts from random solution and searches for the best solution by iteration. It also evaluates the quality of solution by fitness. But it is simpler than genetic algorithm rules. It has no Crossover and Mutation operation of genetic algorithm. As a result, it searches for global optimum by following the optimal value currently searched. This algorithm has attracted the attention of academia for its advantages of easy implementation, high accuracy and fast convergence, and has shown its superiority in solving practical problems. Particle swarm optimization is a parallel algorithm)

说明：  对聚波束脉冲合成孔径雷达的算法进行了仿真，仿真了四种算法(This code simulates a spotlight SAR database. Four reconstruction algorithms (spatial frequency domain interpolation, range stacking, time domain correlation, and backprojection) are provided.)

说明：  电力电子：开关电源的设计，主要包含变压器的设计，DCDC设计，逆变器设计(Power electronics: Design of switching power supply, mainly including transformer design, DCDC design, inverter design)

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说明：  简正波理论计算声场kraken工具包计算声场，可以直接运行(The sound field is calculated by the theory of normal waves)

运用于风力发电系统的直接转矩系统仿真源代码，绝对RUN的起来-Used in wind power generation system of direct torque control system simulation source code, the absolute RUN" s up

功率谱的程序，可以完成对振动信号的功率谱分析(The power spectrum of the program, you can complete the power spectral analysis of vibration signals )