Thread: PID Help
View Single Post
  #9   Spotlight this post!  
Unread 21-01-2015, 22:31
gpetilli gpetilli is offline
Registered User
FRC #1559
 
Join Date: Jan 2009
Location: Victor, NY
Posts: 285
gpetilli is a name known to allgpetilli is a name known to allgpetilli is a name known to allgpetilli is a name known to allgpetilli is a name known to allgpetilli is a name known to all
Re: PID Help

Quote:
Originally Posted by Joe Ross View Post
You're being set up for failure if you're trying to control to +/- 1 sensor tick. I always aim for getting 10 times the resolution compared to the accuracy requirements.
I agree with Joe.

So from the OP, it appears that you are using a 500 pulse encoder mounted directly on the motor shaft? Do you have any gear box before the wheels and what is the ratio? What size wheels? Assuming a 5:1 gearbox and a 4" wheel (~12.56 circumfrence) would give distance resolution of 0.005" Is that really what your accuracy requirement is? I recommend double checking your requirements.
Reply With Quote