Active Disturbance Rejection Position Servo Control of Permanent Magnet Synchronous Motor Based on Improved Extended State Observer

This paper proposes an active disturbance rejection control (ADRC) based on an improved extended state observer (ESO), the accuracy of pmsm tracking system hardware position is improving. Firstly, by introducing the velocity variable as the new input in the extended state observer, a better observation effect of the second-order state variable is obtained; secondly, by introducing a finite-time state observer, the finite-time state observer has the ability to converge in a finite time. advantage. Finally, build a simulation model. Compared with the traditional PI control method, this new method has smaller tracking error, strong anti-interference ability, and can follow higher frequency position signals.