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This study presents an analysis of the relationship of angles and trigonometric functions by applying Hall Effect Sensor HES. Electromagnetic density of 4.624 mT can be generated from the Helmholtz coil. Angle of shaft which was installed at the center of the Helmholtz coil perpendicularly to horizontal plane was considered as reference and can be rotated. In this study, an experiment for measuring the angle of shaft declination on X-axis was carried on. Ranges of measurement were related to the angle resolution between –15 to 15 degree with 1 step degree interval from perpendicular angle Y-axis. Analysis of the relationship between shaft declination and electromagnetic field was performed using HES device which was installed on the top of shaft and perpendicularly to reference electromagnetic field 1,2. The angle declining from the origin which was normal to magnetic field can be determined by measuring the relationship between Hall voltage and magnetic field. Normally, electromagnetic field is nonuniform and varied by point in Helmholtz coil radius. Shaft angles on X-axis were measured for assessing the repeatability of system developed. Five values of results were measured repeatedly at the same input. It can be observed that the system developed can provide the results with the best accuracy and reliability of 95%.

KEYWORDS

Angle; Axis; Decline; Degree; Electromagnetic Field; Helmholtz Coil; HES; Shaft

Cite this paper

W. Sriratana, R. Murayama and L. Tanachaikhan -Application of the HES in Angular Analysis,- Journal of Sensor Technology, Vol. 2 No. 2, 2012, pp. 87-93. doi: 10.4236-jst.2012.22013.





Author: Witsarut Sriratana, Riichi Murayama, Lerdlekha Tanachaikhan

Source: http://www.scirp.org/



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