Title :
A modified sliding observer for robust estimation of rotor magnetizing current of AC IM drive
Author :
Planinc, A. ; Jezernik, Karel
Author_Institution :
Faculty of Tech. Sci., Maribor Univ., Slovenia
Abstract :
A modified sliding observer for robust estimation of rotor magnetizing current of a VSS controlled AC induction motor (IM) drive for an industrial robot is proposed. The switching control laws in the sliding observer are replaced by their continuous approximations. A quantitative analysis for evaluating the estimation error is described and guidelines on pole assignment for the observer with robustness against rotor time constant perturbation is given. The effectiveness of the proposed control scheme with this observer is confirmed by simulation results.<>
Keywords :
control system analysis; control system synthesis; electric drives; induction motors; industrial robots; machine control; machine theory; parameter estimation; poles and zeros; rotors; variable structure systems; VSS; continuous approximations; control system analysis; control system synthesis; estimation error; induction motor drives; industrial robot; machine control; machine theory; modified sliding observer; parameter estimation; pole assignment; robustness; rotor magnetizing current; rotor time constant perturbation; Estimation error; Guidelines; Induction motors; Industrial control; Magnetic analysis; Robust control; Robustness; Rotors; Service robots; Variable structure systems;
Conference_Titel :
Power Conversion Conference, 1993. Yokohama 1993., Conference Record of the
Conference_Location :
Yokohama, Japan
Print_ISBN :
0-7803-0471-3
DOI :
10.1109/PCCON.1993.264164
