Title :
A passivity-based approach to wide area stabilization of magnetic suspension systems
Author :
Namerikawa, Toru ; Kawano, Hiroto
Author_Institution :
Div. of Electr. Eng. & Comput. Sci., Kanazawa Univ.
Abstract :
This paper deals with a passivity-based approach to wide area stabilization of magnetic suspension systems. It is well known that the magnetic suspension systems have strong nonlinearity. In order to realize wide area stabilization of magnetic suspension systems, we design the passivity-based feedback controller considering a nonlinear dynamics of the magnetic suspension systems and a leakage inductance of the electromagnet especially. The systems can be decomposed two subsystems; an electrical subsystem and a mechanical subsystem. We design nonlinear passivity-based controllers for both two subsystems. Steady-state and transient time responses results for some operating points show the effectiveness of the proposed controller experimentally
Keywords :
electric variables control; magnetic fluids; mechanical variables control; nonlinear control systems; nonlinear dynamical systems; stability; suspensions (mechanical components); electrical subsystem; electromagnet leakage inductance; magnetic suspension systems; mechanical subsystem; nonlinear dynamics; nonlinear passivity-based controllers; passivity-based feedback controller; steady-state response; transient time response; wide area stabilization; Control systems; Electromagnetic forces; Equations; Inductance; Iron; Magnetic levitation; Mathematical model; Nonlinear control systems; Robust control; Voltage 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.2006.1657441
