Title :
On robust stability of two flux observers for induction machines
Author :
Medvedev, Alexander
Author_Institution :
Control Eng. Group, Lulea Univ. of Technol., Sweden
Abstract :
Deals with stability properties of two known flux observers for induction machines. It is shown that an arbitrary fast convergence rate in one of the observers is achieved at the expense of its robustness against uncertainty in the rotor angular velocity. Another observer is proven to retain stability notwithstanding any error in the angular velocity measurements, but its estimation error convergence rate is limited by the rotor time constant
Keywords :
angular velocity measurement; asymptotic stability; asynchronous machines; convergence; machine control; matrix algebra; observers; robust control; arbitrary fast convergence rate; estimation error convergence rate; flux observers; induction machines; robust stability; rotor angular velocity; stability properties; Angular velocity; Convergence; Gain measurement; Inductance; Induction machines; Machine windings; Robust stability; Stator windings; Time measurement; Velocity measurement;
Conference_Titel :
Control Applications, 1999. Proceedings of the 1999 IEEE International Conference on
Conference_Location :
Kohala Coast, HI
Print_ISBN :
0-7803-5446-X
DOI :
10.1109/CCA.1999.800935
