Title :
Application of eddy-current sensor for air gap detection in magnetic suspension motors
Author :
Li Xi´nan ; Fengxiang, Wang ; Baoguo, Wang
Author_Institution :
Shenyang Univ. of Technol., China
Abstract :
Dynamically accurate detection of motor displacement is the basis of levitation control for magnetic suspension motors. An eddy-current sensor is widely used for air-gap detection due to its feature of small size, high sensitivity, anti-noise and preferable dynamic performance. This paper introduces the operation principle, static and dynamic performances, and measuring circuit of the eddy-current sensor. The experimental result and a practical application example of an eddy-current sensor in a magnetic suspension motor is reported in the paper
Keywords :
air gaps; eddy current testing; eddy currents; electric current measurement; electric motors; magnetic levitation; air gap detection; air-gap detection; anti-noise performance; dynamic performance; eddy-current sensor; high sensitivity; levitation control; magnetic suspension motors; measuring circuit; motor displacement detection; operation principle; static performance; Capacitive sensors; Circuits; Coils; Frequency; Magnetic levitation; Magnetic sensors; Object detection; Probes; Sensor phenomena and characterization; Sensor systems;
Conference_Titel :
Electrical Machines and Systems, 2001. ICEMS 2001. Proceedings of the Fifth International Conference on
Conference_Location :
Shenyang
Print_ISBN :
7-5062-5115-9
DOI :
10.1109/ICEMS.2001.970678
