The Aerotech motors info can be obtained off their site, they were usually fitted with 1k pulses/rev encoders.
There are many makes and models of drives that can be used with these motors.
The method of control, step/dir or analogue will depend on the system you decide on.
If you want a cheap way to go with control, you should check out Mach and EMC forums here.
Al.
CNC, Mechatronics Integration and Custom Machine Design
“Logic will get you from A to B. Imagination will take you everywhere.”
Albert E.