Quote:
Originally Posted by Ether
...and the process variable for Motor2 is encoder2 position, like this?
The problem I see with that is the transient response to large step changes in driver position command. Motor1 responds immediately to the large change, but Motor2's controller must wait for the error to form between encoder1 & encoder2. Granted, you could crank the P gain way up for Motor2, but it's not immediately clear how well that would work in practice.
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Yes like that.
Yeah, that could definitely cause some problems. Depending on the system you might be able to tune it to react correctly, but it could difficult. The more you limit the speed of motor1 the better the system would react I'd imagine.
The more I think about it, the more I like your original proposal. I wish I had a system I could try it out on.
You know you've made it big when people assume every imperfection is genius! - araniaraniratul [more] 
11-02-2015, 13:07
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