Code

说明：  matlab环境下用AR谱估计算法实现AR模型谱估计(matlab environment AR spectrum estimation algorithm using AR model spectrum estimation implementation)

matlab simulation for freq division mux

UPS 基于matlab的仿真模型，可以根据需要修改参数(Matlab-based simulation model of UPS, you can modify the parameters as needed)

光伏电池阵列输出功率受光照强度和温度变化的影响，因此最大功率点跟踪（MPPT）技术广泛应用于光伏系统中。在所有最大功率点(MPP)控制策略中，扰动观察（P&O）MPPT算法因易实现被广泛应用，然而它的缺点是在稳定工作状态下工作点通过MPP 时会导致能量振荡损耗，并且在光照强度或温度发生突变时表现较差的动态响应。在本文中，提出一种改进型变步长扰动观察MPPT 算法，此方法依据工作点动态调整步长变化，与传统固定步长方法比较，本文提出的方法能有效地提高MPPT 速度和转换效率，通过仿真和实验结果分析，验证了此改进算法的可行性。(PV array output power by light intensity and temperature changes, so the maximum power point tracking (MPPT) technology is widely used in photovoltaic systems. In all the maximum power point (MPP) control strategy, the perturbation and observation (P & O) MPPT algorithm because easy to implement is widely used, but its disadvantage is the steady-state operating point by the MPP causes energy oscillations loss, and in the light intensity or temperature mutated poor performance dynamic response. In this paper, we propose a modified variable step size perturbation and observation MPPT algorithm, this method is based on dynamically adjusting the operating point changes in steps, with the traditional fixed-step methods, the proposed method can effectively improve the speed and efficiency MPPT, The simulation and experimental results verify the feasibility of this algorithm.)

Nivada之CUDA，加速Matlab运算的文档资料。(Nivada of CUDA, speed up the Matlab computing documentation.)

time domain symptom extraction

this code extract the ellipse from noisy image by morphology method

用muller算法求解非线性方程的根 已知方程f(x)=0的三个近似根，以这3点为节点构造二次插值多项式的一个零点作为近似根； 不断迭代计算直到满足精度为止；(Solving the roots of nonlinear equations with Muller algorithm)

说明：  关于Matlab课件，便于大家的学习和工作，是很好滴(On the Matlab software, to facilitate everyone' s learning and work, is a good drop)

building benchmark analysis