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Unread 29-01-2009, 20:44
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FRC #3008 (Kalani Robotics)
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Re: Traction Control for a Turning Tank-Drive

Quote:
Originally Posted by DanL View Post
What exactly do you mean by this? I don't quite understand. Can you elaborate?

And I completely agree with you regarding usage of traction control in a pushing match -- a TCS would probably do the exact opposite of what you want. You definitely need an on/off switch.
The whole idea behind anti-slip control is that the wheels have a higher coefficient of friction when they are not slipping (they are tracking true), so the robot can accelerate faster and push harder. Any slippage at all and the wheel force drops about 20%. As you will be slipping in turns, by definition with slip steering, you will lose traction anyway and there's really nothing you can do about it. So anti-slip control makes sense only for straight line acceleration and straight ahead pushing.