When I give Iq Soll as input, the motor turns for a moment (ca 1/8 of turn) and the Iq goes equal to Iq Soll and the error input for the PI Controller is equal to zero and the Vq output goes to zero and the motor stops to turn and stalls.
On the attached picture you can see the measurement, the blue color is the Iq, the yellow is the IqSoll and the green is the angle of the motor.
Any help? Have someone any ideas? Could be a Problem of the DRV8304?
King Regards,
Nikos