Design of Absolute Magnetic Grid Displacement Sensor Based on Encoding Principle

Abstract:

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A new kind of magnetic grid absolute linear displacement sensor is introduced. The displacement measuring method of two new kinds of magnetic grid sensors for single-row and double-row magnet are also proposed in this paper. The double-row magnet sensor is composed of the look-up table column and encoding column, the look-up table column achieves the calculation of relative displacement within a cycle. Precision of the double-row magnet sensor is analyzed and the resolution can reach 0.75µm. The displacement measurement of single-row magnet is realized by adding Hall group based on the encoding column. The signal is processed according to the voltage curves induced by multi-group of Halls.

Info:

Periodical:

Edited by:

Xingui He, Ertian Hua, Yun Lin and Xiaozhu Liu

Pages:

336-340

DOI:

10.4028/www.scientific.net/AMM.88-89.336

Citation:

J. Z. Liu et al., "Design of Absolute Magnetic Grid Displacement Sensor Based on Encoding Principle", Applied Mechanics and Materials, Vols. 88-89, pp. 336-340, 2011

Online since:

August 2011

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Price:

$35.00

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