Questions about Encoders and PIDControllers

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Questions about Encoders and PIDControllers

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#11

06-01-2013, 14:28

BradAMiller BradAMiller is offline

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Re: Questions about Encoders and PIDControllers

Quote:

Originally Posted by Ether

Somehow I don't think that's what you meant.

Maybe that was a little confusing...
I meant that as the actual speed reaches the setpoint speed, the error term goes to zero. Suppose there was only a proportional term, then the output value from the PID controller would go towards zero (proportional constant times zero is zero, similar for the other terms).

That's what the feedforward term attempts to fix.

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