Title :
Digital sliding mode control for Maglev rotors
Author :
Tsai, Nan-Chyuan ; Hsu, Sheng-Liang ; Chen, Chien-Ting ; Chiang, Chao-Wen
Author_Institution :
Dept. of Mech. Eng., Nat. Cheng Kung Univ., Tainan
Abstract :
A digital sliding mode controller (DSMC) is synthesized to account for the singular perturbation impacts of an electromagnetically suspended rotor system. The order-reduction method is employed to simplify the design and lower down the order of controllers. The DSMC exhibits superior performance in terms of closed-loop stiffness, rise time and overshoot, in comparison to output feedback control and pole assignment. The presented DSMC not only stabilizes the inherently unstable open-loop system, but also preserves the robustness with respect to the parasitic parameter variation
Keywords :
control system synthesis; feedback; magnetic levitation; open loop systems; pole assignment; position control; robust control; rotors; singularly perturbed systems; variable structure systems; Maglev rotor system; digital sliding mode control; digital sliding mode controller; electromagnetically suspended rotor system; open loop system; order reduction method; output feedback control; parasitic parameter variation; pole assignment; singular perturbation impact; Control system synthesis; Control systems; Digital control; Electromagnetic modeling; Magnetic levitation; Mathematical model; Open loop systems; Output feedback; Robustness; Sliding mode control;
Conference_Titel :
American Control Conference, 2006
Conference_Location :
Minneapolis, MN
Print_ISBN :
1-4244-0209-3
Electronic_ISBN :
1-4244-0209-3
DOI :
10.1109/ACC.2006.1657439
