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Unread 02-02-2014, 16:54
Joe Johnson's Avatar Unsung FIRST Hero
Joe Johnson Joe Johnson is offline
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Re: Thread scheduler for PID period control ?

I am not sure why but the autogenerated code from RobotBuilder does not include the feed forward gain, Kf, and the loop period, so they default to 0 and 50ms.

Here is a code snippet:
public Launch() {
super("Launch", Kp, Ki, Kd, Kf, 0.01);

Note that we had 0.005 as the period at first and it was acting squirrely. I think we were having the PID loop take too much of the CPU time. When we backed off to 10ms, life was good.

YMMV.

Joe J.
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