RD

加带通滤波器的FFT开源代码，附带批处理程序(FFT band-pass filter plus open-source code, with a batch process)

调幅中波收音机的接收频率段为550KHz到1605KHz，中频为465KHz。调幅传输模型，对超外差式中波收音机建模(AM medium wave radio frequencies to 550KHz receiver to 1605KHz, IF is 465KHz. AM transmission model, modeling superheterodyne AM radio)

实现了二维结构的拓扑优化设计，并且对程序的每一步进行了详细的解释和说明，对于拓扑优化的初学者来说，很有帮助(The topology optimization design of two-dimensional structure is realized, and every step of the program is explained and explained in detail, which is very helpful for beginners of topology optimization.)

信号处理的方法，包括了轴承特征频率计算，包络分析，fft分析，希伯特变换，信噪比计算等。(The signal processing methods include bearing characteristic frequency calculation, envelope analysis, FFT analysis, Hibbert transform, SNR calculation and so on.)

四杆机构模型，基于MATLAB的丝杆机构仿真。描述了四杆机构运动学机理。(Four-bar linkage model of the screw body simulation based on MATLAB. Kinematics describes the four-bar linkage mechanism.)

说明：  MATLAB数组与运算教程,简单易懂,适合初学者(MATLAB array and computing tutorials, easy to understand for beginners)

将RGB图像转化为网络安全色图像，可以减少一幅图像中色彩种类的使用(RGB images into color images for network security, you can reduce the use of color in an image types)

时域有限差分法-2维自由空间传输电磁场分布(Finite Difference Beam Propagation Method)

IEEE33节点的潮流计算程序，使用了前推回代方法。(IEEE33 node power flow calculation program)

配电网辐射网30节点前推回代潮流计算程序（matlab）配电网辐射网30节点前推回代潮流计算程序（matlab）(Forward and backward substitution with 30 nodes of the grid Radiation Network flow calculation procedures (Matlab) with grid Radiation Network 30 nodes forward and backward substitution trend calculation program (Matlab))