Sensorless Acceleration Estimation and Acceleration Feedback Control to Improve the Disturbance Torque Rejection on Galvano Motor System
Journal
2021 IEEE Energy Conversion Congress and Exposition, ECCE 2021 - Proceedings
Pages
5048-5052
Date Issued
2021
Author(s)
Abstract
This paper proposes a high-performance disturbance rejection for the Galvano motor system through sensorless acceleration estimation and acceleration feedback control. The Galvano motor system is wildly used in the laser processing area because of its fast response and high accuracy. To meet the accuracy and response requirements, the Galvano motor is implemented by a permanent magnet (PM) motor with a sine/cosine encoder. Besides, a laser mirror is coupled with the motor for the motion control of the laser beam. Considering the application on high-speed laser drilling, the disturbance torque caused by the unbalanced mirror vibration will affect the drilling accuracy. To minimize the impact of undesired torque vibration, a separated observer is firstly proposed for the instantaneous acceleration estimation. Besides, the acceleration feedback control is proposed for the disturbance torque rejection. According to experimental results, the proposed sensorless acceleration estimation and control improve the disturbance rejection performance on a Galvano motor system. ? 2021 IEEE.
Subjects
acceleration control and estimation
disturbance rejection
Galvano motor system
Acceleration
Feedback control
Infill drilling
Laser beams
Laser mirrors
Permanent magnets
Torque
Acceleration control and estimation
Acceleration estimation
Disturbance torque
Estimation feedback
Fast response
Laser process
Motor systems
Performance
Sensorless
Disturbance rejection
SDGs
Type
conference paper