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[W,L,q]=huffman(P) 为huffman编码函数 P为信源的概率矢量，W为编码返回的码字 L为编码返回的平均码字长度，q为编码效率 ">

说明：  matlab神经元网络的几个代码,动量下降法算法训练BP网络等(matlab neural network of a few code, momentum descent method algorithm training BP networks)

要实现相应功能的操作，需要在输入框内输入正确的表达式。举例如下： 画直线：x1=20,y1=15,x2=150,y2=100 画圆：x=100,y=100,r=20 画椭圆：x=100,y=100,r=20,a=16,b=9 旋转：x=30(度数)，ax=100,ay=90 锐化：x=80">

说明：  通信系统中完整的bpsk的调制程序，包括误码率的仿真(Complete bpsk communication systems the modulation process, including of the simulation)

downsampling& up sampling wav file

Similations electrical networks with Control & current and active and reactive power

三元组表示的稀疏矩阵的加法,减法,乘法运算器-Triples express the sparse matrix of the adder, subtraction, multiplication device(ples express the sparse matrix of the adder, subtraction, multiplication devic)

This paper presents an improved maximum power point tracking (MPPT) algorithm of a PV system under real climatic conditions. The proposed MPPT is based on the perturbation and observation (P&O) strategy and the variable step method that control the load voltage to ensure optimal operating points of a PV system.

用matlab编写的用于转子动力学分析的有限元程序，可实现转子临界转速和振型分析、稳态响应和瞬态响应分析等功能。()

非线性最小二乘优化问题以误差的平方和最小为准则来估计非线性静态模型参数的一种参数估计方法。设非线性系统的模型为y=f(x，θ)，常用于传感器参数设定。(64/5000 A parameter estimation method based on the minimum sum of squares of errors. Suppose that the model of the nonlinear system is y=f(x,), which is commonly used for sensor parameter setting.)