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基于matlab/simulink的无刷直流电机控制系统仿真，设计了速度电流双闭环。(Based on matlab/simulink for brushless DC motor control system simulation, design speed current double closed loop.)

对matlab各函数的一个串讲，对学习过但很久没用的同学回忆功能非常有用。(some classic examples make matlab easy to study )

这是一本关于机械动力学的教材，是一本全美经典教材，简单实用。(This is a textbook on the mechanical dynamics, is an American classic textbook, simple and practical.)

基于burg算法实现的AR模型功率谱计算，算法已经仿真通过，有前向预测误差及后向预测误差，非常适合与学习加深现代谱估计的理论 (Burg algorithm to achieve the AR model power spectrum calculation algorithm has been through simulation, the forward prediction error and prediction error is ideal for learning to deepen modern spectral estimation theory)

Modal analysis in Matlab to calculate all modal parameters from a structure

改进蚁群算法，简单实用，适合初学者学习，可用于路径寻优(Colony algorithm, simple and practical, suitable for beginners to learn, can be used for route optimization)

简单的人脸识别代码，如果是其他图片的话，放在当前文件下，修改一下文件名即可。(Face Recognition simple code, if it is the other picture, then on the current file, the file name can be changed a bit.)

说明：  实现用bt法，welch法，周期图法，burg法对信号进行滤波(Achieved with the bt method, welch method, periodogram, burg method of signal filtering)

希尔伯特黄变换中英资料，黄先生HHT原文与推荐使用的中文资料，非常有帮助(Hilbert Huang Transform English information Wong HHT original and recommended the use of Chinese data, very helpful)

2017年0616，该频域分解（FDD）土木工程中的一个输出系统识别技术的流行，特别是在结构健康监测。作为一个输出的算法，它是有用的当输入数据是未知的。FDD是模态分析技术，生成系统的实现采用了频率响应（多）输出数据参考。所附的MATLAB代码实现了这一技术的模态参数识别。为了使用此代码，处理（趋势、过滤等）时间的历史数据必须存储在一个Excel文件（数据每一频道栏目）。检查“加速度。对于时间的历史文件的一个实例xlsx”。(In 2017, 0616, frequency domain decomposition (FDD), an output system in civil engineering, was popular in identification technology, especially in structural health monitoring. As an output of the algorithm, it is useful when the input data is unknown. FDD is a modal analysis technique, and the implementation of the system adopts a frequency response (multiple) output data reference.)