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Permanent magnet synchronous motor (PMSM) is the core component of servo system, which has a wide range of applications. Recently, active disturbance rejection control (ADRC) shows excellent performance in servo control. Linear active disturbance rejection control (LADRC) inherits the idea of ADRC and reduces the difficulty of understanding and parameter adjustment. In this paper, four realization structures of LADRC in position control of AC system are discussed at the beginning. Then, simulation analysis about the four realization structures is made on tracking performance, sensitivity of parameters variations and sensitivity of noise. Finally, an adaptive strategy of parameter is proposed for achieving the coordination of noise suppression and tracking performance. With the change of the system, the parameters can be self-adjusted, reflecting a certain level of wisdom.
Inspec keywords: adaptive systems; synchronous motors; active disturbance rejection control; linear systems; machine control; servomechanisms; position control; permanent magnet motors
Subjects: Spatial variables control; Control of electric power systems; Self-adjusting control systems; Synchronous machines; Linear control systems; Stability in control theory