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nibianqi
光伏并网发电系统中逆变器的研究与设计,比较有用的资料，逆变器设计可以参考(Grid-connected PV system inverter design, useful information, inverter design can refer)
- 2013-01-08 19:32:20下载
- 积分：1
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example4_4
例4：在sinc(t)信号中叠加噪声，分析对应频谱
fs=100 采样频率,必须大于两倍基带信号最高频率
ts=1/fs 采样时间间隔
T=2 时间窗大小
(
x=x+0.1*randn(1,N)
x=awgn(x,-10, measured )
figure
plot(t,x)
title( 时域信号图 )
xlabel( t /s )
y=fft(x,N)
figure
if mod(N,2)~=0
N=N-1
end
f=linspace(0,fs/2,N/2)
plot(f,abs(y(1:N/2))*2/N)
title( 叠加噪声的sinc(t)信号频谱 )
xlabel( f /Hz )
figure
y0=y(1:N/2)
P=y0.*conj(y0)/N
P=10*log10(P)
plot(f,P)
title( 功率谱 )
xlabel( f /Hz )
)
- 2010-05-25 20:59:03下载
- 积分：1
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quathyper
四元数双曲空间的一些计算函数，主要包括求四元数的逆，相乘运算等(Some function for the quaternionic hyperbolic space, including the inverse and the product ect.)
- 2014-09-19 15:48:04下载
- 积分：1
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buck-supercapacitor
基于buck变换电路的双闭环超级电容器充电电源MATLAB仿真模型，控制器采用PI调节，恒流控制充电，效果良好(MATLAB SIMULINK model，Based on buck transform circuit, the double closed loop capacitor charging power supply ，controller PI adjustment, the constant current charge control，The result is good)
- 2020-07-04 16:40:01下载
- 积分：1
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MUSIC与常规算法对比
说明： music算法','capon算法','bartlett算法',对比(MUSIC algorithm ','capon algorithm','bartlett algorithm ', comparison)
- 2020-11-14 13:29:42下载
- 积分：1
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Adloffilem
code for finding logo in figure
- 2010-12-16 20:24:01下载
- 积分：1
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nlfa
nonlinear separation based on MLP
- 2010-12-23 18:44:15下载
- 积分：1
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HISTMATCHING
implentation of histogram matching
- 2011-10-13 13:23:59下载
- 积分：1
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PSO
粒子群算法，也称粒子群优化算法（Particle Swarm Optimization），缩写为 PSO， 是近年来发展起来的一种新的进化算法(Evolutionary Algorithm - EA)。PSO 算法属于进化算法的一种，和模拟退火算法相似，它也是从随机解出发，通过迭代寻找最优解，它也是通过适应度来评价解的品质，但它比遗传算法规则更为简单，它没有遗传算法的“交叉”(Crossover) 和“变异”(Mutation) 操作，它通过追随当前搜索到的最优值来寻找全局最优。这种算法以其实现容易、精度高、收敛快等优点引起了学术界的重视，并且在解决实际问题中展示了其优越性。粒子群算法是一种并行算法。(Particle swarm optimization, also known as particle swarm optimization (Particle Swarm Optimization), abbreviated as PSO, is a new evolutionary algorithm developed in recent years (Evolutionary Algorithm- EA). Kind, and simulated annealing algorithm PSO algorithm is similar evolutionary algorithms, it is also starting a random solution, through an iterative search for the optimal solution, which is also used to uate the quality through fitness solution, but it is simpler than genetic algorithm rules It has no genetic algorithm " crossover" (Crossover) and " variant" (Mutation) operation, which by following the current search to find the optimal value to the global optimum. This algorithm is its easy implementation, high accuracy, fast convergence, etc. attracted academic attention and show its superiority in solving practical problems. PSO algorithm is a parallel algorithm.)
- 2015-01-18 20:38:17下载
- 积分：1
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Simulation-of-JTC-using-Matlab
说明： 利用Matlab软件平台对JTC进行了图像识别仿真实验，得到了二维及三维相关输出图像，显示出尖锐的相关峰。仿真实验表明：联合变换进行图像识别中存在强烈的零级干扰，干扰信号是有用信号的7.14倍，输出结果不理想；采用功率谱相减法可以消除零级强干扰，进而提高了图像的识别能力。(Simulations of joint transform correlator (JTC) using Matlab is implemented, and the 2-D and 3-D drawings of the correlation image are obtained. In the simulation experiments, the sharper correlation peaks are showed. The result shows that strong disturbance of zero rank exists in the simulation of JTC, and it is 7.14 times stronger than the useful signal thus, the power spectrum subtraction is used to eliminate the strong disturbance, and the capacity of image recognition is improved.)
- 2011-03-05 23:32:26下载
- 积分：1
