part_VIII

making 3 phase balance 380v 50hz voltage source with pwm

说明：  利用粒子群优化算法对支持向量机中的核函数参数和惩罚参数进行优化是非常有效的手段，可以大大提高鲁棒性。实际过程中读者可通过下载我上传的代码，简单进行修改和阅读附件论文即可快速掌握相关方面的知识，快速使用这一方法。(Particle swarm optimization (PSO) is a very effective method to optimize the kernel function parameters and penalty parameters of SVM, which can greatly improve the robustness. In the actual process, readers can quickly grasp relevant knowledge and use this method by downloading the code I uploaded, simply modifying and reading the attached paper.)

瑞丽衰落信道的仿真，包括延迟、多径条件等，仿真可直接调用函数(Ruili fading channel simulation, including delays, multi-path condition, the simulation can directly call functions)

为孤立特征值的代数方程摄动法的编程例子，能用于一般的教学或科研使用(It can be used for the education of matrix-perturbation and research.)

说明：  对倾转旋翼机的仿真，三个状态分别为悬停，过渡，和前飞(simulation fly hover transition and forward)

PSCAD程序与MATLAB程序的接口，将PSCAD文件产生的.out文件自动处理到所需matlab的文件格式(PSCAD program interface with MATLAB program ， .out file generated by PSCAD automatically processed to the required file format for matlab)

鱼群模型仿真，躲避鲨鱼袭击的模型，多智能体避障(Fish model simulation models avoid shark attacks)

1. 给定模拟信号：，式中，，。对进行采样，可得采样序列 选择采样频率=1 kHz，观测时间ms，观测所得序列及其幅频特性 改变采样频率=300Hz，观测此时的变化 令采样频率=200Hz，观测此时的变化 要求分析说明原理，绘出相应的序列及其它们对应的幅频特性曲线，指出的变化，说明为什么？(failed to translatefailed to translatefailed to translatefailed to translate)

用matlab编程对电压信号用离散化傅里叶级数变成求各次谐波含量(Matlab programming voltage signal with a discrete Fourier series becomes the harmonic content of each request)

波束形成方法的到达方向估计。波束成形，是通用信号处理技术，用于控制传播的方向和射频信号的接收。作为Wi-Fi802.11n标准的可选部分，beamforming被定义为两种基本类型：内在的和外在的。(The Beamforming method for direction of arrival estimation)