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Proceedings Paper

Mechanism and kinetic characteristic of intelligent magnetic fluid acceleration sensor
Author(s): Dong Cao; Guixiong Liu; Taobo Chen
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Paper Abstract

Traditional cantilever accelerometer generally has the problems of mechanical friction and the distort invalidation of elements which the magnetic fluid (MF) acceleration sensor presented in this paper utilizing a moving magnet fully suspended in MF could solve. This MF sensor is simple in the mechanism with controllable measurement range and precision. The moving magnet was balanced by the repulsive force of magnet in axial and MF second-order buoyancy in radial respectively. Its sensor model was brought forward and simplified to obtain its mathematical model. The MF magnetoviscous property that can realize the controllability of viscosity was discussed. The relations of sensor kinetic characteristic to various parameters including MF viscosity, acceleration and magnetic field energy were analyzed. The results show the moving trend is uniform under different acceleration. Through adjusting the magnetic field intensity to modify MF viscosity, it will get good astringency and keep balance time within 0.2s.

Paper Details

Date Published: 13 October 2006
PDF: 6 pages
Proc. SPIE 6280, Third International Symposium on Precision Mechanical Measurements, 62801D (13 October 2006); doi: 10.1117/12.716510
Show Author Affiliations
Dong Cao, South China Univ. of Technology (China)
Guixiong Liu, South China Univ. of Technology (China)
Taobo Chen, South China Univ. of Technology (China)


Published in SPIE Proceedings Vol. 6280:
Third International Symposium on Precision Mechanical Measurements
Kuang-Chao Fan; Wei Gao; Xiaofen Yu; Wenhao Huang; Penghao Hu, Editor(s)

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