DocumentCode :
682226
Title :
Research on the feasibility of eddy current displacement sensor with temperature variation for non-ferromagnetic detection material
Author :
Lv Yunteng ; Zhu Changsheng
Author_Institution :
Dept. of Electr. Eng., Zhejiang Univ., Hangzhou, China
Volume :
1
fYear :
2013
fDate :
16-19 Aug. 2013
Firstpage :
125
Lastpage :
128
Abstract :
For eddy current displacement sensor(ECDS), the output impedance of probe coil is affected by the fluctuation of temperature besides displacement. All kinds of ECDS are based on the analysis of the output impedance of probe coil. When different combinations of environmental temperature and measured displacement could result in the same output impedance, the ECDS would fail in its function to measure the displacement because under such conditions the effects caused by the change of displacement would be completely compensated by the effects resulted from fluctuating temperature. This paper discusses and proves the one-one mapping relations between the environmental parameters [d, T] and the output impedance [R, X] for non-ferromagnetic detection material. This one-one mapping relations could provide a theoretical basis for the feasibility of eddy current displacement sensor working with temperature variation when non-ferromagnetic material is detected.
Keywords :
eddy currents; electric sensing devices; eddy current displacement sensor; nonferromagnetic detection material; one-one mapping relations; temperature variation; Coils; Displacement measurement; Impedance; Impedance measurement; Materials; Probes; Temperature measurement; Eddy current displacement sensor; Environmental parameters; Non-ferromagnetic detected material; One-one mapping relations; Output impedance;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Electronic Measurement & Instruments (ICEMI), 2013 IEEE 11th International Conference on
Conference_Location :
Harbin
Print_ISBN :
978-1-4799-0757-1
Type :
conf
DOI :
10.1109/ICEMI.2013.6743070
Filename :
6743070
Link To Document :
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