QAP

按键式电话如下图所示，当按下某一个键时会产生如图所示的相应的频率模拟信号，并通过对该信号频率的检测，识别出对应的按键。试通过编写一个数字信号分析程序，模拟完成上面的功能。(Touch-tone phone as shown below, when pressing a key will be generated as shown in the corresponding frequency analog signals and, through detection of the signal frequency to identify the corresponding button. Test through the preparation of a digital signal analysis program to simulate the function of the completion of the above.)

简单的用PCA实现人脸识别的matlab程序(Face recognition using PCA to achieve)

说明：  经典视觉显著性算法AC的Matlab代码以及可执行文件。(The Matlab code and executable files of the classic visual saliency algorithm AC.)

A linear system is such that produces its output as a linear combination of its current and previous inputs and its previous outputs [13]. It can be described as time-invariant if the system parameters do not change with time

boost circuit for power electronics

AR预测模型算法实例，针对现在数据对未来数据进行预测，程序中给出油价实例非常实用！(AR prediction model algorithm examples, now for the future for data prediction, very useful!! )

信号的频谱分析函数，输入复信号，fft的长度和Fs，可以直接输出信号频谱图。(Signal spectrum analysis function, the input complex signal, fft length and Fs, can be directly output signal spectrum.)

说明：  系统辨识 辅助变量法、最小二乘法，递推最小二乘法，极大似然估计法、随机梯度法等matlab程序(system identification iv ls rls sg)

说明：  采用双闭环控制pwm的直流电机，输入为直流电压，反馈环节采用速度环和电流环(The DC motor adopts double closed-loop control PWM, the input is DC voltage, and the feedback link adopts speed loop and current loop)

本程序用来计算太阳能的直射辐射，晴天模型(simulation the direct radiation of solar)