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Unread 19-01-2009, 16:31
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Re: Noisy Accelerometer

Quote:
Originally Posted by Daniel_H View Post
I am using a smoothing filter and it's working well, just don't try integrating it to get the velocity. The noise, insignificant on acceleration readings, always ruins velocity for me.

Btw, has anyone obtained a good velocity reading using the accelerometer? through which method?
Daniel,

We've gotten velocity readings from our accelerometer.

We modified the Gyro class, and made the m_analog member public. That way we can use the accumulator support in the Gyro class for the Accelerometer instead.

We manually specified accumulator centers and deadbands.

We also tweaked the averaging and oversampling bits on the analog module.

We are still having some problems with precision, but the numbers as is are useable for some basic autonomous movements. Maybe even good enough to accumulate again to get displacement data... we'll see!
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