MATLAB_sparse_matrix_and_variable_tutorial

三点变步长龙格库特法解非线性方程 三点变步长龙格库特法解非线性方程 三点变步长龙格库特法解非线性方程(Three variable step grid Changlong Kut three nonlinear equations Solving Variable Step Method Changlong Kut grid three variable nonlinear equations step-by-step grid Kut Method Changlong nonlinear equations)

simulation aeroplane using matlab simulink

几个线性拟合的matlab程序,用到了对数，一次，二次，( several linefitng programs,matlab )

-intelligence artificielle

说明：  用MUSIC算法实现多径信号的时域时延估计(Time delay estimation of multipath signal using music algorithm)

有源低通巴特沃斯滤波器设计根据给定的参数值设计有源滤波器(Active low-pass Butterworth filter design parameters according to the given active filter design)

带转矩内环的转速，磁链闭环矢量控制仿真模型(Loop speed with torque, flux loop vector control simulation model)

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.)

it includes pattern recognition tools for matlab software

BP neural network trained by PSO algorithm