Fault detection in electromagnetic suspension systems with state estimation methods

Author

Sinha, P.K. ; Zhou, F.B. ; Kutiyal, R.S.

Author_Institution

Dept. of Eng., Reading Univ., UK

Volume

29

Issue

6

fYear

1993

fDate

11/1/1993 12:00:00 AM

Firstpage

2950

Lastpage

2952

Abstract

A procedure is presented for the design of a fault diagnosis and isolation (FDI) subsystem for electromagnetic suspension systems. This subsystem is based on the Luenberger observer and logical analysis. Using the position sensor output, the observer estimates the state variables. One critical feedback variable is the vertical acceleration of the suspended magnet. The fault of the accelerometer is detected by comparing its output with the estimated state variable. At the same time, a redundant accelerometer takes over to sustain stability. Experimental results illustrate the feasibility of this method

Keywords

accelerometers; fault location; magnetic levitation; state estimation; Luenberger observer; electromagnetic suspension systems; fault diagnosis; fault isolation; logical analysis; position sensor output; redundant accelerometer; state estimation methods; state variable; state variables; vertical acceleration; Acceleration; Accelerometers; Fault detection; Fault diagnosis; Feedback; Magnetic analysis; Magnetic levitation; Magnetic sensors; Observers; State estimation;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.280907

Filename

280907