clock

说明：  学tc的必备工具 成功的编程员从这里开始(Tc essential learning tool for the success of programmers from here)

以中等纯度的精馏塔为研究对象，考虑到不等分子溢流的影响和非理想的汽液平衡，可以得到塔顶产品轻组分含量Y与回流量L之间的传递函数为： 其中由于现场环境干扰，输出带有测量噪声是（0，1）的正态分布序列，它的方差为ɑ=0.5。由于输出中带有很大的噪声信号，故将数字滤波技术中常见的低通滤波器由于偏差控制，滤掉其中的噪声信号，然后在对其进行PID计算，得到实际的控制量。在该方法在噪声较强的环境下，可以得到较好的控制效果。 控制要求： 1、 采用带低通滤波器的增量式PID将塔顶轻组分含量控制在0.99 2、 用ISTE法整定PID参数 3、 在控制过程中，到150周期加入幅度为-20 的阶跃干扰，在第300周期干扰消失。分析PID参数的抗干扰性。 (Medium-purity distillation column, taking into account ranging from molecular overflow and non-ideal vapor-liquid equilibrium, the transfer function between the light component content of the top product Y and the back flow L can be obtained as: Because the field of environmental interference, output with the measurement noise is a normal distribution (0,1) sequence, its variance ɑ = 0.5. As with a lot of noise in the output signal, it will be common in low-pass filter in the digital filtering techniques due to the bias control, filter out the noise signal, then its PID, the actual amount of control. In the strong noise environment, you can get better control effect. Control requirements: 1, using the incremental PID with a low-pass filter to the top of the tower content of light components in the 0.99 2, the method of ISTE tuning PID parameters 3, in the control process, to 150 cycles join the range of-20 step disturbance, disappearance of interference in the first 300 c)

采用相关的算法进行同步，并可粗略估计出多径信道的时延(using the algorithm synchronization, a rough estimate can multi-path channel Delay)

Matlab中选择摄像头，从摄像头得到图像的程序。当系统中有多个webcam时，能够列出并允许用户选择想用的。(Matlab select camera images from the camera to get the procedure. When there are multiple webcam, can list and allows the user to select the desired use.)

prograns for Mimo systems

基于matlab编程环境的电力系统潮流计算pq算法(Matlab programming environment based on the power flow algorithm for computing PQ)

基于动态规划算法的蛋白质序列比对 Needleman-Wunsch Smith-Waterman(protein sequence alignment Needleman-Wunsch Smith-Waterman)

很好用的matlab的常用命令集合，word格式(Good with matlab collection of commonly used commands, word format)

用于图像的分形维数计算，应用boxcount方法，首先对图像进行二值化处理，然后通过搜索白色区域，进行分形计算。(used to the calculation of the fractal dimension,and using the boxcount method,to do the process,and find the white area,to calculation the fractal dimension)

用matlab编写的源程序，挺好用的，大家可(Prepared using matlab source, very good use, we can)