Hello,
I`ve implemented DQ control of a stepper motor with encoder, closed loop. Like PMSM motor, but with 100 poles.
With speed up D and Q conponents begin to oscillate with freq ~ to RPM, moreover Q component goes to 1 level quicly - so I can reach speeds up to 200 RPM max, not more.
Oscillations I suppose are because of encoder is not aligned with poles mechanically.
Does smb know how to work with stepper motor in closed loop system in DQ frame?