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PGPI(NUM,DEN,W,FI,A) plots the stability boundary locus L(KP,KI,W)in the (KP,KI)-plane for an LTI system with transfer function defined by its NUM, DEN coefficients and driven by a PI controller with transfer function, C(s)=kp+(ki/s). Frequency (W) gridding becomes important. Phase Margin, FI, and Gain Margin, A, can be defined. The method works for open loop stable or unstable, minimum or nonminimum phase systems. With Examples. Method and examples used are form "Computation of Stabilizing PI and PID Controllers" by Nusret Tan, Ibrahim Kaya and Dereck P. Atherton. MATLAB release MATLAB 7.5 (R2007b)

matlab实现对伪随机序列PN码非均匀采样程序(PN code matlab realize the non-uniform sampling procedures)

是一个模糊PID控制例子,控制对象为一个直升机俯仰轴的角度控制,数学模型为二阶传递函数.(Is an example of fuzzy PID control, control helicopter for a pitch axis angle control, the mathematical model for the second-order transfer function.)

LS and MMSE comparaison

潮流计算是电力系统稳态分析的重要组成部分，pq分解法是牛拉法的改进。(Power system power flow calculation is an important part of the steady state analysis, P- Q decomposition method is a kind of improvement of cattle rafa.)

图像的稀疏表示，用小波系数经过的构造的矩阵稀疏化后，用少数的系数表示图像。(Image sparse representation, constructed after the matrix of wavelet coefficients after thinning, with a small number of coefficients represent the image.)

pv discriptioon is given

MATLAB CODE FUNCTION CASCADE DETECT FACE AND RECOGNITION

说明：  文件中是用于matlab画smith圆图程序包(Document is used to circle diagram smith painting matlab package)

stock market openprice predictor using inbuilt matlab neural network functions