Title :
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
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;
Conference_Titel :
Electrical and Control Engineering (ICECE), 2010 International Conference on
Conference_Location :
Wuhan
Print_ISBN :
978-1-4244-6880-5
DOI :
10.1109/iCECE.2010.24
