Quote:
Originally Posted by Jogo
2) Holonomic vs….well, non-holonomic: Having never tried a holonomic drivetrain, I was wondering if error could mount up naturally. For example, pushing the joystick to (0.5, pi/4) might for some reason not move the robot at precisely this amount due to environmental factors. I was wondering if teams use a gyro or other sensors to deal with this, but maybe this isn’t a significant problem.
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This isn't a holonomic vs non-holonomic question. You could ask the same question (or a similar question) about a simple tank drive: "
If I push both joysticks forward by the same amount, will the robot go precisely straight ahead?". The answer is no, and it doesn't matter because the driver adjusts (within reason) the joystick position(s) to get the response he seeks.
The only reason holonomic is different is because it has three degrees of freedom, and it's annoying for the driver if, for example, he's got a Halo-style interface and he has to continuously hold a rotation command in order to keep the robot from rotating while he's busy working the fwd/rev and strafe joystick. That's when gyro feedback or a "calibrate" button on the joystick is nice to have.