velocity from accelerometer using numerical intergration
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I have a problem I have a trace from an accelerometer and I want to convert this into velocity I do not major in physics and I was wondering if there is a function on the mathworks forum to help me do this. I am a little confused on how to go about this. I know that my trace is from a tri-axial accelerometer and The participants put the sensors on after some minutes they then twisted 3 times to mark the start of their protocol. I would like to use the trap method if possible. Any help would be greatly appreciated
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Youssef Khmou
2014-1-3
Bran, To make the question clear, you have to describe the nature( dimensions) of the acquired signal, and the sampling frequency. However let us make this simple simulation : dropping a simple object and storing the signal for 2 seconds, with sampling frequency Fs=1000Hz :
t=0:1e-3:2-1e-3;
a=0.5*9.81*t.^2; % the stored signal which is naturally the acceleration due to gravity .
You integrate this quantity :
v=integral(a,1e-2); % with 1e-2 as step .
figure, plot(t,a,t,v,'r'), legend(' Acceleration','Velocity');
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Ella
2015-11-28
Bran please share the solution if you have found it I cant find any way to convert my acceleration data to velocity in real time.
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