Distance and velocity from acceleration plot

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Judah
Judah 2022-7-31
评论： Judah 2022-7-31
Hi,
I have some accelration data from an IMU and would like to get velocity and distance.
How could I do that?
Thanks in advance
figure
plot(dugyro,IMU_AccZ)
title('Acc Z - Raw Data')
ylabel("(m/sec/sec)")

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Walter Roberson
Walter Roberson 2022-7-31
You could use cumtrapz(), twice.
Caution: using numeric integration to calculate distance and velocity is rather prone to error.
https://en.wikipedia.org/wiki/Inertial_navigation_system
Even the best accelerometers, with a standard error of 10 micro-g, would accumulate a 50-meter error within 17 minutes
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Walter Roberson
Walter Roberson 2022-7-31
ds = seconds(dugyro);
Vel = cumtrapz(ds, New_IMU_AccZ);
dist = cumtrapz(ds, Vel);

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