TMS320F280049C: InstaSpin - torque control at zero speed

Beat Arnet

Please provide guidance on how maximize torque at zero speed using the estimator of Motor Control SDK 2.0.

In particular, I am interested in which strategy should be used for setting the members "speed_ref_Hz" and "speed_int_Hz" of EST_InputData_t in conjunction with the forced angle feature.

over 6 years ago

0 Yanming Luo over 6 years ago

TI__Guru** 116920 points

As you know, InstaSPIN-FOC is a sensorless FOC solution that's difficult to get stable torque output during zero speed, even very low speed.

Both can be set to the current reference speed you want.

0 Beat Arnet over 6 years ago in reply to Yanming Luo

Intellectual 890 points

OK - but in torque mode, there is no speed reference per se. Can I set them both to an arbitrary value in that case?

0 Yanming Luo over 6 years ago in reply to Beat Arnet

TI__Guru** 116920 points

Yes, you may set both to an arbitrary value, but the sign must be according to the rotation direction controlled by the torque current.

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TMS320F280049C: InstaSpin - torque control at zero speed