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Speed Only Controller for InstaSPIN-FOC Possible?

David Wang60
Intellectual 980 points


I am evaluating the IS-FOC using the speed + torque and torque mode only. Is it possible to modify the software to be speed only mode? If so, what is necessary for this and what kind of impacts would be seen with the FAST encoder etc... My application only requires speed control as we want our motor to produce as much torque as possible with keeping the speed of the motor constant.

Thanks

-David

  • 0
    TI__Genius 17175 points
    David,

    InstaSPIN-FOC in speed control mode is a cascade of a current-control loop (inner) and a speed-control loop (outer); as such, you cannot simply command a speed and not expect some setting of Iq (which is the current control, i.e. torque control)

    Sean