Quote:
Originally Posted by JABot67
RC Car Drive:
Left thumb Y axis gets mapped to ArcadeDrive forward-backward
Right thumb X axis gets mapped to ArcadeDrive turning
[IMG]http://juguetedivertido.com/wp-content/uploads/2011/02/YY-4582Remote.jpg[IMG]
This drive control scheme is the only scheme that has been used by any of the teams I have been on, from 2007 to 2015. It gives the driver an absolutely guaranteed way of driving straight forward and back, and no other drive scheme mentioned here comes close. It also allows the driver to turn on a dime, with no forward-to-backward movement if none is required - useful when you don't have that much room.
One thing my team noticed in 2012 was that teams who used two-stick tank or one-stick arcade drive were struggling to balance the bridge. Thinking about it, it makes sense - when you are trying to drive slowly forward or backward with one of those drives, you may end up inadvertently turning.
This thread really should be a poll - I think RC car drive is actually a very popular drive (and is also by far my favorite!  )
With mecanum and slide and swerve drive, different drive schemes have to be used. I would probably recommend the First-Person Shooter drive, using the free axis of the forward-backward stick to strafe. |
It doesn't seem like you read the thread... what you call "RC car drive" is what is commonly know as "FPS" control. Other control methods, including single-stick arcade (with a gimbal stick), provide a reliable way to 'drive straight forward.'
Frankly, even FPS style control won't be guaranteed to drive perfectly straight without closed-loop control due to variances in motor torque and drivetrain drag. And when closed-loop control is in the mix, almost anything can manage to reliably drive straight.
It is a horrific and sweeping generalization to say that: "teams who used two-stick tank or one-stick arcade drive were struggling to balance the bridge." Your conclusion that their control system was holding them back is simply false.
Now, I'm not saying "FPS" drive is bad, it certainly is a great drive control scheme, but don't undercut your own argument by making such rash statements.
Quote:
Originally Posted by RunawayEngineer
The dominant hand effect might be there, but I don't think that it is significant. First of all, I never noticed it in my years on a drive team.
But less anecdotally . . . look at guitar-playing: the non-dominant hand is doing at least equal dexterity tasks, probably moreso. Practice and muscle memory can remove that weakness from that activity.
|
Sure, lots of practice always helps. Perhaps that is not the best anti-two-stick-tank argument.
Still, how can a two-stick system drive straight at part-throttle? This is VERY difficult to do.
Consider this thread from last year:
http://www.chiefdelphi.com/forums/sh...d.php?t=125759
Team 33 found that all drivers wound up preferring FPS-style control to two-stick tank and found it "way easier" to control their robot(s).