Title :
LQG based speed controller for torsional vibration suppression in 2-mass motor drive system
Author :
Ji, Jun-Keun ; Lee, Dong-Choon ; Sul, Seung-Ki
Author_Institution :
Dept. of Electr. Eng., Seoul Nat. Univ., South Korea
Abstract :
In this paper, an LQG based speed controller for torsional vibration suppression in a 2-mass motor drive system is proposed. Because of the difficulty of measuring the load speed and the shaft torque, the Kalman filter as an optimal full order estimator is used. The Kalman filter can also estimate the load torque disturbance as well as unknown states. The details of the determination of the control parameters of a LQG based speed controller with load torque feedforward compensation is explained, and how the control response is affected based on the selection of each weighting in the performance index is also considered. Simulations are carried out to verify this algorithm in comparison with a conventional PI controller
Keywords :
Kalman filters; compensation; control system analysis; electric drives; electric motors; machine control; machine theory; state estimation; torsion; velocity control; vibration control; Kalman filter; LQG based speed controller; algorithm; control response; load speed; load torque disturbance; load torque feedforward compensation; optimal full order state estimation; performance index; shaft torque; simulation; stabilisation; torsional vibration suppression; two-mass motor drive system; unknown states; weighting selection; Control systems; Motor drives; Resonance; Shafts; State estimation; State feedback; Torque control; Torque measurement; Velocity measurement; Vibration control;
Conference_Titel :
Industrial Electronics, Control, and Instrumentation, 1993. Proceedings of the IECON '93., International Conference on
Conference_Location :
Maui, HI
Print_ISBN :
0-7803-0891-3
DOI :
10.1109/IECON.1993.339166
