Victor 884

[Gary Bonner]

Does anyone see any advantage to the new speed controller? Is output less than 10% really usable?

[bigqueue]

Originally posted by Gary Bonner
Does anyone see any advantage to the new speed controller? Is output less than 10% really usable?

I don't know exactly how it might be useful, or even if it is possible, but you might somehow use it with your CUSTOM CIRCUIT as a feedback from the control system or driver to the circuit.

The new victor gives you full range of 0 to 12v output.....(m\no missing codes!)

-Quentin

[Joe Johnson]

I am among a minority of FIRST folks who have been beating on Tony Norman of Innovation First at every opportunity to get rid of that nasty deadband.

While it does not seem like under 10% matters, it matters very much for folks trying to do feedback loops.

With the 883, the things turned off at 10% and don't turn back on until -10% -- this means that you have a jump in voltage of 20%

This is a huge headache for feedback loops.

Joe J.

[Al Skierkiewicz]

I agree with Joe, if we are to get really good at introducing students to real world design we must have real world parts available. The new controllers ought to produce some really interesting designs and I would expect the Innovative Design Award would go to a team with the new controller designed into a new sub system. If you are on one of these teams I would love to see what you have accomplished when we get to competition.
Al

[Paul Copioli]

That 10% is the cause of feedback loop headache. Dr. Joe and Al are right. Trying to do a feedback loop within the deadband is really painful, now maybe our arms won't be as jumpy.

-Paul