When the operating conditions of the permanent magnet synchronous motors（PMSM） vector control system based on traditional adaptive system change

the object parameters and the mathematical model for the system will also change

which makes the system have a big error in the practical application. Aiming at this problem

a two-level fuzzy adaptive system that does not depend on parameters is proposed. The method uses the stator current as a reference model

and gain coefficients of the two-stage controller are respectively calculated according to the correlations.Simulation and experimental results show that the proposed algorithm is more robust

and its dynamic and steady-state performance are significantly improved.