A High Accuracy Displacement Detection Method for Magnetic Bearing

Author

Wenyue, Zhang ; Junyue, Yang ; Yanjun, Ge

Author_Institution

Sch. of Mech. Eng., Dalian Jiaotong Univ., Dalian, China

fYear

2010

fDate

25-27 June 2010

Firstpage

66

Lastpage

68

Abstract

In order to obtain high accuracy signals of displacement, a new displacement detection method for magnetic bearing based on DSP (Digital Signal Processor) was proposed. Therefore, a novel simple hardware circuit was designed, and an anti-aliasing filter circuit was equipped, which can solve problem of signals aliasing, and improve the anti-interference capacity of the system. In addition, a temperature compensation method based on the software was put forward to eliminate the temperature drift of displacement sensors. Finally, the effectiveness and reliability of the displacement dete system were verified in the experiment.

Keywords

compensation; digital signal processing chips; displacement measurement; magnetic bearings; network synthesis; sensors; signal detection; signal sampling; DSP; anti-interference capacity; antialiasing filter circuit; displacement sensor; high accuracy displacement detection method; magnetic bearing; temperature compensation method; temperature drift; Cutoff frequency; Digital signal processing; Magnetic levitation; Rotors; Temperature; Temperature sensors; anti-aliasing filter circuit; displacement detection method; magnetic bearing; temperature compensation;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical and Control Engineering (ICECE), 2010 International Conference on

Conference_Location

Wuhan

Print_ISBN

978-1-4244-6880-5

Type

conf

DOI

10.1109/iCECE.2010.24

Filename

5630366