abstract

• In this paper, the speed observer design problem for induction motors is approached by means of an estimation technique which exploits some properties of the error dynamics that make feasible to express this system as a feedback interconnection, subject to a disturbance signal, of two subsystems that can be rendered passive via a proper choice of the output injection terms. Then, a semiglobal convergent low order observer, which simultaneously estimates rotor fluxes and motor speed in presence of unknown constant load torque, is proposed. Passive speed observer performance is experimentally evaluated and compared with results obtained under the same conditions for an observer based on a model reference adaptive system technique.

authors

• Espinosa-Pérez G.
• Gallegos M.A.
• Moreno J.A.
• Álvarez Salas Ricardo

publication date

• 2009-01-01

published in

• 2009 6th International Conference on Electrical Engineering, Computing Science and Automatic Control, CCE 2009  Proceedings

keywords

• Induction motor; MRAS; Passive observer; Speed observers Automation; Process control; Speed; Constant load torques; Disturbance signals; Estimation techniques; Feedback interconnection; Model reference adaptive system; MRAS; Passive observer; Speed observers; Induction motors

Digital Object Identifier (DOI)

• 10.1109/ICEEE.2009.5393330

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