How to calculate mean of this signal in the image below.

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Hammad 2018-8-20

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https://ww2.mathworks.cn/matlabcentral/answers/415501-how-to-calculate-mean-of-this-signal-in-the-image-below

编辑： Dimitris Kalogiros 2018-8-20

采纳的回答： Dimitris Kalogiros

How to calculate Black waveform from brown waveform.

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Dimitris Kalogiros 2018-8-20

Does your paper talk about synchronization or PLLs or something like that?

Hammad 2018-8-20

Title of paper: A Simulation Study of Crazy-PSO Controller For Direct Matrix Converter. I thinks its done by moving average.

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Dimitris Kalogiros 2018-8-20

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https://ww2.mathworks.cn/matlabcentral/answers/415501-how-to-calculate-mean-of-this-signal-in-the-image-below#answer_333400

编辑：Dimitris Kalogiros 2018-8-20

在 MATLAB Online 中打开

I tried to generate your input data.

If you set noise_amp=0, you will observe the influence of moving average on your useful data.

% input signal generation
t=0:0.001:40;
signal_amp=1;
noise_amp=2; 
clip_amp=4;
x=signal_amp*sin(2*pi*0.25*t);
x=x+noise_amp*randn(size(x));
x(x>clip_amp)=clip_amp;
x(x<-clip_amp)=-clip_amp;
% moving average
y=zeros(size(x));
y(1)=x(1);
gain=0.001;
for n=2:length(x)
    y(n)=(y(n-1)+gain*x(n))/(1+gain);
end
% compare signals
figure; 
plot(t,x,'-r','color',[1 .4 .2]); hold on; 
plot(t,y,'-k');
zoom on; grid on;
xlabel('time')
legend('input data', 'moving average');