A variable structure, model reference adaptive control (VS-MRAC) devoted to cancel interferences without the requirement of an auxiliary input is proposed. This method is an improved alternative to the strategies recently proposed in the control theory literature.
Bertran, E., Montoro, G. Adaptive us-mrac for disturbance cancellation. "Electronics Letters", Gener 1995, vol. 31, núm. 2, p. 142-144.