Closed-loop motion controllers are top performers. They are used in virtually every industry segment when applications demand the highest precision or speed. That performance comes at a cost, however.
Closed-loop controllers must be tuned, a process in which several "gains" are adjusted to achieve optimal dynamic performance. If you're relatively new to motion control, or haven't done it in a while, the concept of tuning may seem somewhat mysterious, even intimidating. But don't fret.