Subject:
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Re: Inertial guidance
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Newsgroups:
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lugnet.robotics
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Date:
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Sun, 13 Jan 2002 17:07:33 GMT
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Viewed:
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1637 times
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Steve, I see your point. I forgot the sensor also responds to gravity. I
suspect that the best we can do is a very rough demo of principle, not a
practical navigation system.
Thanks for your insight! That is what makes this forum so useful.
- pete.
In lugnet.robotics, sjbaker1@airmail.net writes:
> > Steve Baker wrote:
> You need to measure them all - even if you are only interested in
> your position in two-dimensions because if you go up even a gentle
> slope, your pitch angle causes some of your Heave motion to affect
> your 2D position along the ground and also causes your Surge sensor
> to feel a small amount of the effect of gravity (because it's not
> laying completely flat).
>
> Unless you have really high quality accelerometers and laser gyro's, I
> don't think inertial navigation is gonna work for Lego robots.
>
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Message has 1 Reply:
 | | Re: Inertial guidance
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| (...) Where an inertial system *might* have some applicability would be to fill in the gaps between sightings of some kind of a navigational landmark. The gradual accumulation of error is the big problem - but if you only need the inertial (...) (23 years ago, 15-Jan-02, to lugnet.robotics)
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Message is in Reply To:
| | Re: Inertial guidance
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| (...) By "Six degrees of freedom" I mean: 1) Translation to Left/Right 2) Translation Forwards/Backwards 3) Translation Up/Down 4) Rotation left/right 5) Rotation fore/aft 6) Roll left/right. These are often called (respectively) by the names: Sway, (...) (23 years ago, 12-Jan-02, to lugnet.robotics)
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