If you're finding the actuator hard to control, the cause may be a delay in the feedback of your control loop. Also, the tricky functions you're looking for are probably built into NI's motion control software. Unfortunately, the software can only be used with an NI Motion Control board.
If you're interested in tested the fuctionality of our motion control hardware and software, I encourage you to contact your local sales representative, or to call us by going to www.ni.com/ask and receiving the toll free phone number.
Kyle V
Applications Engineer
National Instruments