Vector integration - accelerometer data processing
Sebastien Moindrot
I'm looking for a function to help me to process the output from an
accelerometer to obtain velocity and Position. The data are
acceleration measured every 0.1s. If such a function is available
could please tell me which one it is or if you have met such a problem
in the past.
Thanks for your help.
Sebastien
Amphlett
butterworth high-pass) and then use cumsum()*dt and cumsum(cumsum())*dt*dt.
e.g.
% I may have the arguments round the wrong way here.
[b,a]=butter(10,0.1,'high');
acc=filter(b,a,yourdata);
vel=cumsum(acc)*dt;
pos=cumsum(vel)*dt;
John Lukesh
I think you should look at MATLAB’s ode (ordinary differential equations)
functions, function ode45 for example. You should be able to set up your
integration of accelerometer data problem as a set of first order
differential equations and use one of the ode functions to solve for
velocity and position. Go to help/function/ode45 as a start.
Regards, John Lukesh
Jun
> Hi,
>
> I think you should look at MATLAB?s ode (ordinary differential equations)
Can you tell me your new email address please?
Thank you very much!
Cheers,
Jun
Steven_Lord
"Jun " <wang...@163.com> wrote in message
news:ka8j2u$q05$1...@newscl01ah.mathworks.com...
MATLAB Central) if you want to ask a question you should probably post it to
the newsgroup rather than trying to email him. [Please do NOT email it to me
directly either; post to the newsgroup so that everyone can read it and
perhaps offer suggestions.]
That being said, ODE45 or CUMTRAPZ would be good first steps in integrating
accelerometer data; use ODE45 if you have a function you've fit to the data
that fits well/matches the theory behind your experiment, CUMTRAPZ if you
have just the data itself.
--
Steve Lord
sl...@mathworks.com
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