Title :
LQG/LTR robust control of an AC induction servo drive
Author :
Wu, Hsiang-Jui ; Tzou, Ying-Yu
Author_Institution :
Inst. of Control Eng., Nat. Chiao Tung Univ., Taiwan
Abstract :
The robust control of an AC induction servo drive is examined. The linear-quadratic-Gaussian with loop-transfer-recovery (LQG/LTR) methodology is used for the servo compensator design to improve the drive performance and meet the stability-robustness specifications in the frequency domain. Based on the principle of indirect field orientation, a simplified model of the current-decoupled induction drive is constructed and used for the design of the proposed servo control scheme. Experimental results are presented to show that LQG/LTR design is a viable approach, and that problems associated with the parameter variation, plant uncertainty, and load disturbances can be solved
Keywords :
electric drives; induction motors; machine control; servomechanisms; AC induction servo drive; current-decoupled induction drive; frequency domain; indirect field orientation; linear-quadratic-Gaussian; load disturbances; loop-transfer-recovery; parameter variation; plant uncertainty; robust control; servo compensator; Automatic control; Control system synthesis; Control systems; Frequency domain analysis; Induction motors; Robust control; Robust stability; Servomechanisms; Servosystems; Uncertainty;
Conference_Titel :
Power Electronics Specialists Conference, 1991. PESC '91 Record., 22nd Annual IEEE
Conference_Location :
Cambridge, MA
Print_ISBN :
0-7803-0090-4
DOI :
10.1109/PESC.1991.162738
