Subject:
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Re: Detecting tilt with an Accelerometer.
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Newsgroups:
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lugnet.robotics
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Date:
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Mon, 21 Oct 2002 18:55:39 GMT
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Viewed:
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642 times
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> How it might work: Measure the acceleration into the direction of the point
> the object is rotating around while falling sideways (e.g. the wheels of the
> segway). The acceleration in that direction will be 1g * cos(a), where a is
> the angle between the current position of the segway and the verical axis.
> But since cos(a) ~ 1 for most small angles, the object has to tilt a decent
> amount to measure a significant reduction in vertical acceleration.
I think I figured this out, right before I read this.
I'm not sure if this is what you're saying, but if I put the sensor on the
bottom, under the axle, then it will spin opposite the direction the LegWay
is falling. So, it could actually reach almost 2g (just before the top
smashes into the ground)
Then, I just have to ignore the sideways acceleration caused by the motors
(that's the hard part) and it WILL work.
hmm...
Steve
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Message is in Reply To:
 | | Re: Detecting tilt with an Accelerometer.
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| (...) It might work, but imho not the obvious way. How it won't work: Measure the acceleration sideways. You would measure an acceleration if you were holding the whole setup at a certain angle, but since the whole sensor including the mechanic (...) (22 years ago, 21-Oct-02, to lugnet.robotics)
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