Originally Posted by
mmjpotter
A question which surfaces from time to time on the Zone relates to whether stepper motor control systems provide a full closed-loop facility.
Steppers do not usually provide a closed loop, they are often used because of economics, the loop is assumed but not verified.
I also prefer servo's just because my experiences have been less than successful, but also alot of people use them, again, because of the economics.
They are probably closer to BLDC motors than DC brushed.
Originally Posted by
mmjpotter
could a stepper motor be hooked-up to replicate the response of the DC motor ???
I guess that begs the question, Why would you try? IMO if you are going to the effort of using encoder for feedback confirmation, then use a servo motor, which should offer smaller output increments, than the steppers 1.8°.
My 2¢.
Al.
CNC, Mechatronics Integration and Custom Machine Design
“Logic will get you from A to B. Imagination will take you everywhere.”
Albert E.