PMSM control system based on SADRC control

In this paper, the PMSM is taken as the research object, and the active disturbance rejection controller (ADRC) is used to construct the speed closed-loop to improve the system immunity. For nonlinear active disturbance rejection controller (NLADRC), it has high tracking accuracy and strong anti-interference ability under small disturbance, but linear active disturbance rejection controller (LADRC) has the characteristics of strong anti-interference ability under large disturbance and fast recovery time. Combining the advantages of NLADRC and LADRC and avoiding the shortcomings of both, a linear / nonlinear active disturbance rejection switching control strategy (SADRC) is proposed and verified on a permanent magnet synchronous motor platform with a DC generator as the load.