The short answer is probably "yes".
When you say asynchrone motor, I assume you mean something like an induction motor with a variable speed drive. If the motor drive has an input for velocity control (ex. 0-5V, 0-10V, etc.), then you could use an
analog output card or
analog output Fieldpoint module to control the speed of the motor. Just use the mass flow readings from the Fieldpoint unit to calculate and update the voltage sent from the analog output device to the drive. If you are already familiar with communicating with Fieldpoint devices, then adding an analog output module should be relatively straightforward.
If the motor you h
ave is more like a servo motor and the drive operates only in torque mode, then the
NI 7344 would be a better choice. The 7344 has an onboard veloity controller that can receive commands from LabVIEW.
Regards,
Brent R.
Applications Engineer
National Instruments