Title :
Decoupling Control of Bearingless Induction Motor Based on Rotor Flux Orientation with Inverse System Theory
Author :
Li Qing ; Liu Xianxing
Author_Institution :
Jiangsu Univ., Zhenjiang, China
Abstract :
A bearingless induction motor is a multi-variable, strong-coupled and nonlinear system. To start with, according to the working principles of bearingless induction motor, the equations of torque force and radial suspension forces are inferred. Then the state equations of motor based on rotor flux orientation is set up. Secondly, the reversibility of system based on the mechanical equations is discussed in detail. Using ¿-th order inverse system, dynamic decoupling control between radial force and electromagnetic torque force and radial forces are realized. Finally, the controllers are designed respectively according to the linear system theory. The simulation results have showed that the whole control system has good dynamic and static performance.
Keywords :
control system synthesis; induction motors; linear systems; machine control; multivariable control systems; nonlinear control systems; bearingless induction motor; dynamic decoupling control; electromagnetic torque force; inverse system theory; linear system theory; mechanical equations; multivariable system; nonlinear system; radial forces; radial suspension forces; rotor flux orientation; ¿-th order inverse system; Control system synthesis; Control systems; Electromagnetic forces; Force control; Induction motors; Linear systems; Nonlinear equations; Nonlinear systems; Rotors; Torque control; Bearingless Induction Motor; Decoupling Control; Inverse System; Rotor Flux Orientation;
Conference_Titel :
Measuring Technology and Mechatronics Automation (ICMTMA), 2010 International Conference on
Conference_Location :
Changsha City
Print_ISBN :
978-1-4244-5001-5
Electronic_ISBN :
978-1-4244-5739-7
DOI :
10.1109/ICMTMA.2010.652
