Baseband_propagation

更高阶的微分方程组的解法（内附2个解法m文件）(More high-end solution of differential equations (with two solutions m file))

Decomposition and reconstruction example 5

Direct Torque Control

说明：  基于三对角矩阵LU分解的追赶法，编写的追赶法分解五对角矩阵，并在此基础上解以五对角为系数矩阵的线性方程组。(Tridiagonal matrix based on LU decomposition method to catch up, catch up with the preparation of the Decomposition of five pairs of diagonal matrix, and on this basis for the solution to five diagonal coefficient matrix of linear equations.)

基于结构相似性的图像质量评价算法SSIM(Image quality assessment metric (Structural similarity index))

This program apply downsampling on a speech file.

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，已经调试成功.内含m文件，可直接运行。( Wavelet packet analysis to extract vibration signal characteristic frequency, Achieve serial data acquisition, Has been successful debugging. M contains files can be directly run.)

说明：  这是一种鲁棒的控制算法，比传统的PID控制算法性能好(This is a robust control algorithm, compared with the traditional PID control algorithm performance)

脉冲编码调制(PCM)实现 编程实现PCM技术的三个过程：采样、量化与编码。 采样：低通连续信号采样，以 x=sin(200*t) m=x./(200*t) m=m.*m 为例说明低通采样定理，绘出信号时、频图形；带通连续信号采样，以x=sin(20*t) m=x./t 为例说明带通采样定理，绘出信号时、频图形。 量化：均匀量化，以幅度 的正弦信号为例实现为64级电平的均匀量化；非均匀量化，输入A律PCM编码器的正弦信号 ，采样序列为 ，将其进行PCM编码，给出编码器的输出码组序列 编码：以上述信号为例，实现A律的13折线近似法及国际标准PCM对数A律量化编码。(Pulse code modulation (PCM) to achieve PCM technology programming three processes: sampling, quantization and coding. Sample: low-pass continuous signal sampling to x = sin (200* t) m = x./(200* t) m = m.* m an example low-pass sampling theorem, draw the signal, frequency graphics bandpass sampling continuous signals to x = sin (20* t) m = x./t an example bandpass sampling theorem, draw the signal, frequency graph. Quantization: uniform quantization, in order to realize the magnitude of sinusoidal signal as an example for the 64 level uniform quantization non-uniform quantization, input A law PCM encoder sine signal, the sampling sequence, to be PCM encoded, the encoder is given The output code sequence Code: A Case Study of the signal to achieve the 13 A line approximation law and international standards on the number of A law PCM coding quantization.)

一个单位负反馈系统的根轨迹法超前校正。可直接在matlab中打开并运行。(A negative feedback system unit root locus method leading correction. Directly in matlab open and run.)