neidandao

递推遗忘因子最小二乘 recursive forgotten factor ls(recursive forgotten factor ls)

Small signal stability

this is the Broyden s method for solving nonlinear system of equations

ieee30节点的matlab程序，基于极坐标下牛拉法的求取雅可比矩阵(failed to translate)

DCT变换的matlab源代码。适合用作特征提取的预处理方法来使用。(DCT transform matlab source code. Suitable for feature extraction preprocessing method to use.)

维纳滤波 对于初学者有很大帮助 初学小波变换必用(Wiener.m)

denoise In BayesShrink[5] we determine the threshold for each subband assuming a Generalized Gaussian Distribution(GGD) . The GGD is given by GG¾ X ¯ (x) = C(¾ X ¯ )exp¡ [® (¾ X ¯ )jxj]¯ (6) ¡ 1 < x < 1 ¯ > 0, where ® (¾ X ¯ ) = ¾ ¡ 1 X [ ¡ (3=¯ ) ¡ (1=¯ ) ]1=2 and C(¾ X ¯ ) = ¯ ¢ ® (¾ X ¯ ) 2¡ ( 1 ¯ ) and ¡ (t) = R1 0 e¡ uut¡ 1du. The parameter ¾ X is the standard deviation and ¯ is the shape parameter It has been observed[5] that with a shape parameter ¯ ranging from 0.5 to 1, we can describe the the distribution of coefficients in a subband for a large set of natural images.Assuming such a distribution for the wavelet coefficients, we empirically estimate ¯ and ¾ X for each subband and try to find the threshold T which minimizes the Bayesian Risk, i.e, the expected value of the mean square error.

产生一个长为1000的二进制随机序列，“0”的概率为0.8，”1”的概率为0.2； 对上述数据进行归零AMI编码，脉冲宽度为符号宽度的50 ，波形采样率为符号率的8倍，画出前20个符号对应的波形（同时给出前20位信源序列） 改用HDB3码，画出前20个符号对应的波形 改用密勒码，画出前20个符号对应的波形 分别对上述1000个符号的波形进行功率谱估计，画出功率谱 改变信源“0”的概率，观察AMI码的功率谱变化情况(A length of 1000 random binary sequence, and " 0" with a probability of 0.8, " 1" with a probability of 0.2 the AMI code above zero, the pulse width of the symbol width of 50 , the waveform sampling rate Symbol rate 8 times, draw the top 20 of the waveform corresponding to the symbol (the first 20 and gives the source sequence) switch HDB3 code, the first 20 to draw a waveform corresponding to the symbol to switch Miller code, the first 20 symbols correspond to draw The waveforms of the symbol of the waveform 1000 power spectrum estimation, shown to change the source power spectrum " 0" , the probability of observation of the power spectrum of AMI code changes)

土木工程领域。matlab斜拉桥有限元调索程序。二维，线性结构。可以输入结构模型参数。包含三种方法：可行域法，弯矩能量最小法，零弯矩法。(Civil engineering fields. transfer cable stayed bridge matlab finite element program. Two-dimensional, linear structure. Structural model parameters can be entered. Contains three methods: feasible domain method, the minimum bending energy, zero moment method.)

直流电动机的转速控制实例，采用传统PID控制算法。(DC motor speed control example, using the traditional PID control algorithm.)