Title :
Decoupling Control of the Bearingless Induction Motor Based on Differential Geometry Variable-structure Method
Author :
Lei, Dong ; Xianxing, Liu ; Yuxin, Sun
Author_Institution :
Jiangsu Univ., Zhenjiang
Abstract :
A decoupling control approach based on differential geometry has been developed for the bearingless induction motor, which is multi-variable, nonlinear and high coupling system. To start with, the mathematical equations of the bearingless induction motor describing the dynamic behavior of the radial force model have been transformed. Also the state equations of the motor are set up. Secondly, the theory of differential geometry is given and the suspension spring with variable stiffness instead of conventional one is used in the model. So the nonlinear model is transferred into a linear one. Last but not least, sliding model control theory has been applied to these subsystems to obtain the desired response. The simulation results have showed that the whole control system has good dynamic and static performance.
Keywords :
differential geometry; equations; induction motors; machine control; springs (mechanical); suspensions (mechanical components); variable structure systems; bearingless induction motor; decoupling control; differential geometry variable-structure method; mathematical equations; multivariable nonlinear coupling system; radial force model dynamic behavior; sliding model control theory; state equations; suspension spring; Control systems; Couplings; Geometry; Induction motors; Mathematical model; Nonlinear control systems; Nonlinear dynamical systems; Nonlinear equations; Solid modeling; Springs; Bearingless induction motor; Decoupling control; Differential; Nonlinear; Variable-structure;
Conference_Titel :
Control Conference, 2007. CCC 2007. Chinese
Conference_Location :
Hunan
Print_ISBN :
978-7-81124-055-9
Electronic_ISBN :
978-7-900719-22-5
DOI :
10.1109/CHICC.2006.4346883
