With the correct motor, encoder, and drive, you can closely monitor and control the speed of a motor using the National Instruments motion controllers. Depending on the motion controller that you have, there will be a set velocity range that you can move the motor. For our 7340 series boards, they have a velocity range of 1 to 4,000,000 steps/s. For more information on our motion controllers and to look at the manuals then start at the following webpage:
http://sine.ni.com/apps/we/nioc.vp?cid=3809〈=US
If you have any more specific questions then please let us know.
Regards,
Michael
Applications Engineer
National Instruments