DocumentCode :
2086462
Title :
Inverse system decoupling control of electric spindle system supported by AC AMB
Author :
Zhu Dehong ; Wang Peng ; Cheng Xin ; Zhu Huangqiu
Author_Institution :
Sch. of Electr. & Inf. Eng., Jiangsu Univ., Zhenjiang, China
fYear :
2010
fDate :
29-31 July 2010
Firstpage :
3538
Lastpage :
3543
Abstract :
A dynamic decoupling control approach based on inverse system theory is developed for the electric spindle system supported by 5 degree-of-freedom (DOF) AC active magnetic bearings(AMB), which is multi-variable, nonlinear and strong coupling system. The state equations of the 5-DOF AC AMB are set up based on the configuration of 5-DOF AC AMB being introduced and mathematical models of axial and radial suspension forces being given. The reversibility of the system of 5-DOF AC AMB is analyzed, the state feedback algorithm based on a-th order inverse system method is deduced, and the original nonlinear coupled system is decoupled into pseudo-linear system. The linear quadranic optimum control theory is applied to synthesize the pseudo-linear system, and the system of simulation was set up based on MATLAB. The simulation experiments have shown that this decoupling control strategy can realize dynamic decoupling control among 5 degrees of freedom of the electric spindle system, the rotor can be suspended steadily and the system has good dynamic and static performance.
Keywords :
inverse problems; linear quadratic control; linear systems; machine bearings; machine control; machine tool spindles; magnetic bearings; rotors; state feedback; suspensions (mechanical components); 5 DOF AC active magnetic bearings; 5-DOF AC AMB; MATLAB; decoupling control strategy; dynamic decoupling control approach; electric spindle system; inverse system decoupling control; inverse system method; inverse system theory; linear quadranic optimum control theory; original nonlinear coupled system; pseudolinear system; radial suspension forces; rotor; state equations; state feedback algorithm; Control systems; Equations; Magnetic levitation; Mathematical model; Nonlinear dynamical systems; Silicon; Suspensions; AC; AMB; Decoupling Control; Inverse System; State Equations;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Control Conference (CCC), 2010 29th Chinese
Conference_Location :
Beijing
Print_ISBN :
978-1-4244-6263-6
Type :
conf
Filename :
5572627
Link To Document :
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