Force model identification for magnetic suspension systems via magnetic field measurement

Author

Lin, Chin E. ; Jou, Huei L.

Author_Institution

Inst. of Aeronaut. & Astronaut., Nat. Cheng Kung Univ., Tainan, Taiwan

Volume

42

Issue

3

fYear

1993

fDate

6/1/1993 12:00:00 AM

Firstpage

767

Lastpage

771

Abstract

In magnetic suspension analysis, a simplified model of the current-to-distance relationship is not sufficient to design an optimal control. Due to the nonlinearity of the magnetic field, an accurate model, which is a function of the suspended object, suspension distance, core material, and operation conditions, is difficult to obtain. An improved force-model-identification method for magnetic suspension systems establishes reliable parameters for describing the magnetic field characteristics. The parameter for each test sample can be calculated under the specified operating conditions after some magnetic field measurements. The results lead to effective controller design for magnetic suspension systems

Keywords

control system synthesis; identification; magnetic field measurement; magnetic fluids; optimal control; controller design; corrective factor; current-to-distance relationship; force-model-identification; magnetic field measurement; magnetic levitation; magnetic suspension analysis; nonlinearity; optimal control; suspension distance; Force measurement; Magnetic field measurement; Magnetic levitation; Magnetic materials; Nonlinear optics; Optical sensors; Position measurement; Pressure measurement; Temperature sensors; Time measurement;

fLanguage

English

Journal_Title

Instrumentation and Measurement, IEEE Transactions on

Publisher

ieee

ISSN

0018-9456

Type

jour

DOI

10.1109/19.231612

Filename

231612