Title :
Observer-identifier for an induction motor
Author :
Correa, J. ; Poznyak, A.S. ; Zaremba, A.T.
Author_Institution :
Dept. of Autom. Control, CINVESTAV-IPN, Mexico City, Mexico
Abstract :
A method for speed estimation of an induction motor is elaborated. First, the rotor speed is considered as a state variable of null dynamics. A nonlinear MIMO observation technique is applied for estimating the corresponding extended state. As a result, the scheme estimates machine variables and speed except in some singular points where the extended system is not observable; then it is necessary to implement a switching structure for the observer, letting, in the vicinity of the singular points, only the machine variables be evaluated. The Simulink simulations included demonstrate nice performance properties of the rotor flux and the speed estimates
Keywords :
MIMO systems; digital simulation; induction motors; machine vector control; matrix algebra; nonlinear systems; observers; parameter estimation; Simulink simulations; extended state; induction motor; nonlinear MIMO observation technique; null dynamics; observer-identifier; rotor speed; speed estimation; switching structure; Availability; Induction motors; MIMO; Machine vector control; Observability; Observers; Rotors; State estimation; Stators; Voltage;
Conference_Titel :
Control Applications, 2001. (CCA '01). Proceedings of the 2001 IEEE International Conference on
Conference_Location :
Mexico City
Print_ISBN :
0-7803-6733-2
DOI :
10.1109/CCA.2001.973953
