Real-time sliding-mode observer and control of an induction motor

Author

Benchaib, Abdelkrim ; Rachid, Ahmed ; Audrezet, Eric ; Tadjine, Mohamed

Author_Institution

Lab. des Syst. Autom., Univ. de Picardie-Jules Verne, Amiens, France

Volume

46

Issue

1

fYear

1999

fDate

2/1/1999 12:00:00 AM

Firstpage

128

Lastpage

138

Abstract

This paper deals with the control and observation of an induction motor using a sliding-mode technique. The authors´ aim is to regulate the speed and the square of the rotor flux magnitude to specified references. Assuming that all the states are measured, sliding surfaces are proposed within a sliding-mode control framework. Then, the stator voltages are derived such that the sliding surfaces are asymptotically attractive since, in practice, the rotor fluxes are not usually measurable, a sliding-mode observer is derived to estimate the rotor fluxes. Furthermore, it is shown that their observer is robust against modeling uncertainties and measurement noise. To illustrate their purpose, they present experimental results for a 0.37-kW induction motor obtained on a digital-signal-processor-based system (TMS 320C31/40 MHz). The experimental results show that the proposed control system is robust against rotor resistance variations

Keywords

control system synthesis; induction motors; machine control; machine testing; machine theory; observers; robust control; rotors; stators; variable structure systems; velocity control; 0.37 kW; 40 MHz; TMS 320C31 DSP; control design; control performance; induction motor; real-time sliding-mode control; robustness; rotor flux magnitude estimation; rotor resistance variations; sliding-mode observer; speed regulation; stator voltages; Electrical resistance measurement; Induction motors; Measurement uncertainty; Noise measurement; Noise robustness; Observers; Rotors; Sliding mode control; Stators; Voltage;

fLanguage

English

Journal_Title

Industrial Electronics, IEEE Transactions on

Publisher

ieee

ISSN

0278-0046

Type

jour

DOI

10.1109/41.744404

Filename

744404