Turning Quality Metrics

[JVN]

Originally Posted by Chris Hibner

I'm a big believer in overshoot as a turn quality metric (as in, less is better). It's great that a chassis turns nice and easy, but it's not great when it continues turning for an extra 30 degrees after you let go of the stick.

Is that a function of the software more than the mechanical system? To me it is counter-intuitive to think of this as a virtue for the mechanical system.

I can make a mechanical system with so much turning scrub that it will never overshoot... but by definition that kind of hurts my turning torque.

Am I missing something Chris?

-John

PS - For those that don't know, Chris is (imho) the "turning master" -- he wrote one of the best whitepapers in the history of Chief Delphi, back when most people were building 2WD or 4WD robots, and many of those teams who did 4WD couldn't get them to turn worth a dang.