soundchange

单纯形法，求解线性规划问题的通用方法。单纯形是美国数学家G.B.丹齐克于1947年首先提出来的。它的理论根据是：线性规划问题的可行域是 n维向量空间Rn中的多面凸集，其最优值如果存在必在该凸集的某顶点处达到。顶点所对应的可行解称为基本可行解。单纯形法的基本思想是：先找出一个基本可行解，对它进行鉴别，看是否是最优解；若不是，则按照一定法则转换到另一改进的基本可行解,再鉴别；若仍不是，则再转换,按此重复进行。因基本可行解的个数有限，故经有限次转换必能得出问题的最优解。如果问题无最优解也可用此法判别。 (Simplex method, for solving linear programming problems common method. Simplex is the American mathematician GB Danzig in 1947 first put forward. Its theory is based on: linear programming problem feasible region is n-dimensional vector space Rn convex set in the multi-faceted, and its optimal value must be if the vertices of a convex set to achieve. Feasible solution corresponding to the vertex is called a basic feasible solution. The basic idea of the simplex method is: first find a basic feasible solution, to identify it and see whether it is the optimal solution If not, switch to another according to certain rules to improve the basic feasible solution, and then identify if still No, the re-conversion, click here to repeat. Due to the limited number of basic feasible solution, it will be converted by the finite optimal solution can be reached. If the problem can also be the optimal solution method has been applied without discrimination. )

基于MATLAB的DTMF拨号演示文件，可帮助理解DTMF的基本原理。(DTMF Presentations may help understand the basic tenets of DTMF.)

single user energy detection

本程序可进行植被物候研究，用于提取植被返青期、枯黄期及生长季长度等物候参数。(This procedure can be carried out vegetation phenology studies, used to extract reviving vegetation, yellow and growing season length of phenological parameters.)

模型预测控制_MPC_系统仿真软MPC件开发与实现 (mpc jiao cheng)

参考Matlab提供的模块建立简化的三相锁相环的仿真模型，只保留必要的步骤，如abc-dqz只计算Vq，去除频率反馈模块和自动参数调整模块等。 建立单相锁相环的计算模型  简化单相锁相环的系统结构，保留必要的PI控制器等模块  验证并讨论输入信号频率在45-65Hz变化时设计的锁相环的动静态性能  仿真并分析三相输入信号包含谐波、不平衡和直流偏移时锁相环的锁相结果(Reference Matlab provides three-phase PLL module to establish a simplified simulation model, retaining only the necessary steps, such as abc-dqz counting only Vq, remove frequency feedback module and automatic parameter adjustment module.  simulation and analysis of the three-phase input signal contains harmonics, unbalance and DC offset PLL phase-locked Results)

matlab中文文档帮助，适用于matlab初学者(Matlab help Chinese document, suitable for beginners matlab)

matlab实现的CIMMJPDA算法，利用了回波的幅度信息，实现目标跟踪(CIMMJPDA algorithm matlab implementation, the use of the echo amplitude information to achieve target tracking)

铣削加工动力学单自由度半离散方法,求解铣削加工稳定性叶瓣图，不同于两自由度(The single degree of freedom (sdof) semi-discrete method for milling dynamics is used to solve the stability profile of milling process, which is different from that of two degrees of freedom)

模式向量维数太大，无法进行模式识别,降维 (k-l)