Calcul Speed, Position by acceleration with an accelerometer

Question

roux terence 2016-5-31

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https://ww2.mathworks.cn/matlabcentral/answers/286562-calcul-speed-position-by-acceleration-with-an-accelerometer

编辑： James Tursa 2016-6-1

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Hello everybody,

I would like to calculate the speed and the position with acceleration datas. Does exist a command to calculate this ?

I'm using currently a for

for i = 1:length(Acc_X);
    Vit_X(i)= (Acc_X(i))*(t(i+1)-t(i));
    Pos_X(i) = 0.5*Acc_X(i)*((t(i+1)-t(i))^2);
end

If someone can help me.

Thanks

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Answer 1

James Tursa 2016-6-1

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https://ww2.mathworks.cn/matlabcentral/answers/286562-calcul-speed-position-by-acceleration-with-an-accelerometer#answer_224173

编辑：James Tursa 2016-6-1

Well, what you are currently calculating are changes in velocity and changes in position, i.e. delta-v and delta-p. To do get velocity and position using your Euler scheme you need to add these up incrementally. You could use a loop for this or you could use the cumsum function. Also, your loop will only work if the t array is larger than your Acc_x array.