Title :
Sensorless Estimation of Airgap in a Magnetically Levitated (MagLev) System
Author :
Krishnamurthy, M. ; Chaddha, N. ; Fahimi, B.
Author_Institution :
Power Electron. & Controlled Motion Lab., Texas Univ.
Abstract :
This paper investigates the electromagnetic and dynamic analysis of a magnetically levitated (maglev) system. A simple experiment illustrating the principles of electromagnetic suspension (EMS) is described and simulation results are given. Finite element analysis has been done to determine levitation forces and magnetic flux used for system modeling. This type of levitation is unstable without the feedback control therefore a robust controller has been proposed to maintain the air gap between the body in motion and guideway. Various controller design methods are evaluated for this non-linear model and results haven been compared. A sensorless methodology has also been proposed to estimate the air gap
Keywords :
air gaps; control system synthesis; feedback; finite element analysis; magnetic flux; magnetic levitation; robust control; vibrations; EMS; airgap sensorless estimation; electromagnetic suspension; feedback control; finite element analysis; levitation forces; maglev system; magnetic flux; magnetically levitated system; robust controller; Electromagnetic analysis; Electromagnetic forces; Feedback control; Finite element methods; Magnetic analysis; Magnetic flux; Magnetic levitation; Medical services; Modeling; Sensorless control;
Conference_Titel :
Industrial Electronics, 2006 IEEE International Symposium on
Conference_Location :
Montreal, Que.
Print_ISBN :
1-4244-0496-7
Electronic_ISBN :
1-4244-0497-5
DOI :
10.1109/ISIE.2006.295976
