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Re: Concept Discussion: Vision Closed Loop or Encoder/Gyro PID based Closed Loop?
Let's play in the fantasy world where image processing takes 0 time.
With off the shelf webcams the fastest you're likely to get is 30 fps. Compare at the update rate of the NavX which is configurable between 4 and 200Hz. The Gyro can be a faster source of updates.
I've always subscribed to the theory that running control loops on sensors that respond quicker was more successful.
Add onto this the fact that processing time will lower my effective update rate I feel it's just much more likely to be successful with the Gyro.
EDIT: Encoders on a turret are generally even more accurate so I'd just rely on them. I've tried based on vision position (2006) and it was functional but not optimal.
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