A linearized feedbac k syste m with a re ference mode l is designed fo r a nonlinear squirre l induction moto r subjected to resistance and inductance deviations. T he use o f a re ference mode l maintains the deco upling between the ro tor speed regulatio n and that of the ro to r ux modulus despite parame te r variatio n, whic h yie lds the independence of the ir dynamics. A compariso n te st is carried o ut to illustrate the use fulness o f the re fe rence model.