Research on Speed Stability of Permanent Magnet Synchronous Servo System

Author

Xu, Dong ; Wang, Tianmiao ; Liu, Jingmeng ; Wei, Hongxing

Author_Institution

Beijing Univ. of Aeronaut. & Astronaut., Beijing

fYear

2007

fDate

23-25 May 2007

Firstpage

851

Lastpage

855

Abstract

The paper concerns with the speed stability of permanent magnet synchronous servo system. Used in numerical control machines, the servo system is required to output steady rotor speed. Based on vector control theory, a servo system is designed with PID module as the regulators of the speed and current loops. The effect of important factors including speed regulator, current regulator, the speed and current feedback are analyzed. Then the methods to enhance the rotor speed stability are discussed, including optimizing the regulators and filtering the current signals. The feedback speed gotten from positional sensor whose precision is decided by the sensor adapts to this servo system. The result of both simulation and screw thread process experiments on NC lathe validated their effectiveness.

Keywords

angular velocity control; electric current control; machine control; permanent magnet motors; stability; synchronous motors; three-term control; PID module; current loops regulators; permanent magnet synchronous servo system; speed regulators; speed stability; vector control theory; Computer numerical control; Feedback; Machine vector control; Optimization methods; Permanent magnets; Regulators; Sensor systems; Servomechanisms; Stability; Three-term control;

fLanguage

English

Publisher

ieee

Conference_Titel

Industrial Electronics and Applications, 2007. ICIEA 2007. 2nd IEEE Conference on

Conference_Location

Harbin

Print_ISBN

978-1-4244-0737-8

Electronic_ISBN

978-1-4244-0737-8

Type

conf

DOI

10.1109/ICIEA.2007.4318529

Filename

4318529