Technology selection for robot motor driver

Rain,

InstaSPIN-MOTION is the ideal solution to driving your motors for this application.  It meets all three of your requirements.  It builds directly upon InstaSPIN-FOC in order to improve the performance for applications.  So you will still be able to leverage the advanced sensorless observer provided by InstaSPIN-FOC.

to add to this, your requirements require the use of an encoder, you can't do this sensorless. You'll build your projects off of InstaSPIN_motion proj_13x

Thanks for your answers!

Am I correct to assume, the encoder will be required for the position feedback and not for the actual motor driving (speed regulation and vector drive)?

The rotor angle provided by the encoder will be used as feedback for the vector control modulation, used to derive the estimated speed feedback, and provide the mechanical position.

So only basic motor functions can be utilized with a sensorless design?

Using the FAST SW sensor you can run torque or velocity+torque Beftor control for applications that don't operate near zero speed.