DSP-based self-tuning IP speed controller with load torque compensation for rolling mill DC drive. - Jun-Keun Ji; Seung-Ki Sul (IEEE Trans. Ind. Electron., 1995)

Kalman filter and LQ based speed controller for torsional vibration suppression in a 2-mass motor drive system. - Jun-Keun Ji; Seung-Ki Sul (IEEE Trans. Ind. Electron., 1995)