Active Disturbance Rejection Control for PMSMs Based on Equivalent Input Disturbance Estimator

A new active disturbance rejection control(ADRC) system of permanent magnet synchronous motors(PMSMs) based on equivalent input disturbance estimator was presented.Subject to mathematic model of PMSMs after direct feedback linearization,tracking-differentiator(TD) and nonlinear state error feedback(NLSEF) were adopted to calculate control quantity and the equivalent input disturbance estimator was introduced to estimate unknown disturbance.Simulation results illustrate that this controller can estimate and effectively restrain unknown disturbance of the system.