Speed servo system of permanent magnet synchronous motors based on the inverse method

A decoupling control approach based on inverse systems was developed for permanent magnet synchronous motors (PMSM). A novel inverse control scheme was proposed to decouple the performance of PMSM. On the base of the reversibility analysis of the PMSM's mathematical model, the PMSM system is decoupled into a second-order linear speed subsystem and a first-order linear stator current subsystem. Simulation results show that the proposed control scheme possesses excellent control performance and good robustness against load disturbance.