According to new results concerning linear parameter varying (LPV) systems, a regulator is
designed for the stator current control of an asynchronous motor which is the most commonly used electric
motor in industrial applications. It is shown that the proposed LPV control strategy renders the closed loop
stable independently of how the rotor speed, taken as the scheduling parameter, varies in time within the
admissible range, while being point-wise optimal with respect to a quadratic performance index. This result
is obtained by properly realizing the parametric transfer function of the regulator that ensures stability and
optimal performance for all fixed values of the rotor speed. Simulations carried out on a recent benchmark
model show that the proposed control scheme performs well.
