non-linear motor velocity command

[swsyoon]

Hello, I'm trying to control step motor and I have driver from Appliedmotion,inc, which is PDO5580 and STAC6-Q. I'm wondering if I can control step motor with velocity command of function of timeusing NI motion control card and software. Also, I need voltage input to changethe step motor direction back and forth using some function.
It would be very appreciated if you recommend the card and software.
The velocity command, For example, is V= 2 * exp(0.05*t), where t = time.The step motor is a part of linear actuator and the attached is example for motion of linear actuator
Thank you
Wonseok Yoon
 

linear travel.jpg:
http://forums.ni.com/attachments/ni/240/6670/1/linear travel.jpg

[Brian Beal]

The STAC6-Q  is a fully programmable motion controller.  If you have a DAQ card with analog output, you can use the joystick function of the STAC6.  Your velocity profile can be generated using DAQmx, and the STAC6 would follow the speed.  As an alternative, you can use the serial interface of the STAC6 and send it velocity commands at predetermined intervals.  I recall that I could query the STAC6 serially over 100 times/second.  That should be good enough for what you are doing.
 

[swsyoon]

Thank you for your kind reply.
By the analog voltage input I mean, is if the analog voltage goes down to zero(not exactly zero), then I will turn the motor motion in opposite direction.
I need analog data acquisition port too. Does the motion controller card has analog singal input?
So, rotaional direction of motor is supposed to change depending on the value of analog signal.
 
I appreciated your help.
 
Wonseok.