ROBUST SLIDING MODE CONTROL AND FLUX OBSERVER FOR INDUCTION MOTOR USING TWO-TIME-SCALE APPROACH
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Published
Dec 9, 2005
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Abstract
This paper presents a new method for designing
robust adaptive sliding mode flux observer for induction
motor drive. The idea is to combine singular perturbation
and sliding mode techniques, obtaining in this way, the so-
called two-time-scale sliding mode observer. The method
assumes that the rotor speed signal is available. The
control algorithm is based on the indirect field oriented
sliding mode control with an on-line adaptation of the
rotor resistance to keep the machine field oriented. The
control-observer scheme seeks to provide asymptotic
tracking of speed and rotor flux in spite of the presence of
an uncertain load torque and unknown value of the rotor
resistance. The validity for practical implementation has
been verified through computer simulations.
robust adaptive sliding mode flux observer for induction
motor drive. The idea is to combine singular perturbation
and sliding mode techniques, obtaining in this way, the so-
called two-time-scale sliding mode observer. The method
assumes that the rotor speed signal is available. The
control algorithm is based on the indirect field oriented
sliding mode control with an on-line adaptation of the
rotor resistance to keep the machine field oriented. The
control-observer scheme seeks to provide asymptotic
tracking of speed and rotor flux in spite of the presence of
an uncertain load torque and unknown value of the rotor
resistance. The validity for practical implementation has
been verified through computer simulations.