Hi Vasi,

> Hi Joep, I saw the robots, nice work but I don't understand why the
> robot is not "balanced" already from construction like a Segway is:
> http://en.wikipedia.org/wiki/Segway_PT
The segway is not balanced from construction either, since the point
of gravity is above the wheel asix. Segways and balancing robots are
close to an inverted pendulum.

> I can't compare them (with Segway) because is unfair. Robots are very
> tall and have small wheels. And the firmware must act very quickly,
> otherwise they fall fast.
The time constant of the robot/segway is a function of the mass and
lenght of the pendulum. Taller robots have larger time constants, so
their response is not that fast.  A segway with driver has a lot of
mass and is quite long too, making it easier to have smooth behavior.

> It is a study base for a future Segway (for both sensors and
> software)?
No, just curiosity (can I get this to work? ;)

B.t.w. I drove a segway a few times and I love it! A bit to expensive
for something I'd have no practical use for though...

Joep

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