cthd39-40

matlab初学的if语句和循环语句的基本用法，很有用处的。(matlab beginner of if statements and loops in the basic use, very useful.)

齿轮接触疲劳强度分析程序，机械设计中使用。(Gear contact fatigue strength analysis program, used in mechanical design。 )

说明：  异步电机的精确控制和速度辨识是交流传动系统中重要问题。在该仿真系统中，电机转速采用易于检测的电机定子电压和电流得到转速MRAS辨识算法来估算。由于速度辨识算法中电压模型的纯积分环节会引起的误差积累和漂移问题，采用改进积分型转子磁链估算模型来解决。(The precise control and the speed identification of AC motor are the very important issues on AC drive system.In this system, induction motor is controlled by the direct torque control, stator flux is estimated by u-n model observer that is effective in the full range of speed, motor speed is estimated by MRAS speed identification algorithm that is depended on the voltage and the current of motor stator easily detected. The modified integral rotor flux estimation model is used to solve the problem that the normal model can be affected by the error accumulation and drift of integral calculation in the voltage model of conventional speed identification algorithm. )

用来计算电磁兼容屏蔽效能的程序，matlab程序(used to calculate EMC shielding effectiveness of procedures, procedures Matlab)

产生高斯分布的白噪声的方法. 数据输出格式为txt. 可以读取到其它程序中, 作为后续开放使用. (have a Gaussian distribution of white noise method. Data output format txt. Can be read into other procedures, As a follow-up opening.)

基于支持向量回归机，预测股价（10天），可以根据自己的需要对参数和预测天数进行灵活调整(Based on support vector regression to predict the stock price (10 days), according to their needs and prediction of parameters for flexible adjustment of the number of days)

read mail from matlab

利用二维时域有限差分法纵向TE波模拟钻井(Using two-dimensional finite difference time domain simulation of drilling TE wave)

说明：  混沌理论盒维数的计算，MATLAB语言环境(Chaos theory calculation of box dimension, MATLAB language environment)

this is matlab code to solve the convex problem for cs theory