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Unread 02-03-2015, 17:31
Aero Aero is offline
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AKA: Ari Lotter
FRC #0865 (Warp7)
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Join Date: May 2013
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Re: Elevator Motion Profiling / PID Ramping

Quote:
Originally Posted by eddie12390 View Post
Ether has a lot of information about motion profiling here: http://www.chiefdelphi.com/media/papers/3107. If you haven't seen it, it would be a good starting point. I know for sure that the Cheesy Poofs used trapezoidal motion profiles for their 2011 robot so it may be a good place to find an example. (https://github.com/Team254/FRC-2011)
I read the Motion Profiling whitepaper, looked through the Poof's 2011 Github, and also read through 236's 2015 code. All the motion profiling I can find involves drivetrain stuff, which is between static values. Nothing that'll let you move between non-predefined setpoints.

Quote:
Originally Posted by Bluman56 View Post
Did you attempt to lower the P (gain) value of your PID loop?
That will provide slower acceleration, but won't help the deceleration because our integral term will take over.