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

fYear

1993

fDate

19-21 April 1993

Firstpage

316

Lastpage

321

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Conversion Conference, 1993. Yokohama 1993., Conference Record of the

Conference_Location

Yokohama, Japan

Print_ISBN

0-7803-0471-3

Type

conf

DOI

10.1109/PCCON.1993.264164

Filename

264164