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matlab code for sensor nodes

用镜像矩阵求出矩阵的QR分解（正交三角分解），并求解线性方程组，该方法不必选主元，但其计算过程非常稳定。也可用于求矩阵的广义逆和求解线性最小二乘问题。子过程QRDCMP用镜像矩阵求m*n矩阵A的QR分解，A=Q^TR,其中Q是m*m正交矩阵，R为m*n上三角矩阵；子过程QRBKSB用矩阵的QR分解求解线性方程组Ax=b，其中A为n阶非奇异方阵。(Matrix obtained with the mirror matrix QR decomposition (orthogonal triangular decomposition), and solving linear equations, the method does not have to choose the main element, but its calculation process is very stable. Can also be used to find the generalized inverse matrix and solving linear least squares problems. Sub-process of the mirror matrix QRDCMP m* n matrix A QR decomposition, A = Q ^ TR, wherein Q is a m* m orthogonal matrix, R is m* n upper triangular matrix subprocess QRBKSB a QR decomposition to solve the matrix linear equations Ax = b, where A is non-singular square matrix of order n.)

matlab环境下PLL经典例程，包含一阶和二阶锁相环。(matlab environment PLL classic routines, including a first-order and second-order phase-locked loop.)

基于混沌优化的人工势场法小车避障的Matlab仿真源代码。(Obstacle avoidance based on chaos optimization artificial potential field method car.)

一个好用的PCA源代码，两个程序，PCA.m为调用子代码，已调(An easy to use the PCA source code, two procedures, PCA.m call sub-code modulated)

龙格库塔法和fft转换计算非线性微分方程，十分好用。简单方便。(Runge kutta method and FFT transformation calculation of nonlinear differential equations, is very good.Easy and convenient.)

matlab下傅里叶变换的程序例程，是pdf的(under the Fourier transform matlab routine procedure is the pdf)

说明：  自己编制的傅立叶反变换MATLAB程序，有详细的注释，方便大家理解傅立叶反变换的意义。(Prepared by the Fourier inverse transform their own MATLAB programs, with detailed notes, to facilitate us to understand the significance of the Fourier inverse transform.)

说明：  很好用 ， 实验过的， 素轻松判定素数数。(sushu)

This model gives you the transformation of abc components of voltage and current into dqo components which is mostly used in power systems and power electronics