Em 19/6/2012 15:06, Robert Rolf escreveu:
> ML is correct.
> If your mems sensors are hitting a physical limit, they will no longer
> produce a correct average
> due to clipping.
>
> The typical solution to your problem is having an accelerometer with
> sufficient dynamic range that it
> does not clip, and low pass filter the heck out of it. Then use a rate gy=
ro
> to get your dynamic tilt.
> Combine the two signals to get a noise free tilt signal. LPF accel+ HPF
> gyro at same break point.
> Given your extreme vibration, you will want to find a gryo with the lowes=
t
> acceleration induced errors.
>
> See the 'composite filter' techniques used in the DIY Segway software.
>
> Robert


I am sure the OP said he can't mechanically filter the signal. Why?
I think it is easy to stick the entire board to a heavy metal plate and
below them put a soft sponge pad. Is the application that space constrained=
?


Isaac

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