Application of the HES in Angular Analysis

Witsarut Sriratana, Riichi Murayama, Lerdlekha Tanachaikhan

Department of Intelligent Mechanical Engineering, Faculty of Engineering, Fukuoka Institute of Technology, Fukuoka, Japan.
Faculty of Engineering, Ramkhamhaeng University, Bangkok, Thailand.

DOI: 10.4236/jst.2012.22013                

Abstract

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

Conflicts of Interest

The authors declare no conflicts of interest.

References

[1]	C. Chaiyachit, S. Satthamsakul, W. Sriratana and T. Suesut, “Hall Effect Sensor for Measuring Metal Particles in Lubricant,” International Multiconference of Engineers and Computer Scientists, Hong Kong, 14-16 March 2012, pp. 894-897.
[2]	W. Sriratana, K. Nakmee and L. Tanachaikhan, “Subsidence Monitoring System for Industrial Machines Based on Magnetic Field Method,” International Conference on Control, Automation and Systems, Seoul, 27-30 October 2010, pp. 346-349.
[3]	V. Hiligsmann and P. Riendeau, “Monolithic 360 Degrees Rotary Position Sensor IC,” IEEE Sensors Conference, Vienna, 24-27 October 2004, pp. 1137-1142.
[4]	B. Lequesne and T. Schroeder, “High-Accuracy Magnetic Position Encoder Concept,” IEEE Transactions on Industry Applications, Vol. 35, No. 3, 1999, pp. 568-576. doi:10.1109/28.767003
[5]	Y. Y. Lee, R. H. Wu and S. T. Xu, “Applications of Linear Hall-Effect Sensors on Angular Measurement,” 2011 IEEE International Conference on Control Applications (CCA), Denver, 28-30 September 2011, pp. 479-482. doi:10.1109/CCA.2011.6044465
[6]	G. Arfken, “Mathematical Methods for Physicists,” Academic Press, Orlando, 1985.
[7]	E. Ramsden, “Hall-Effect Sensor: Theory and applications,” Elsevier, Burlington, 2006, pp. 195-196.
[8]	L. Tanachaikhan, N. Tammarugwattana, W. Sriratana and P. Klongratog, “Declined Angle Analysis of Shaft Using Magnetic Field Measurement,” ICROS-SICE Internation- al Joint Conference 2009, Fukuoka, 18-21 August 2009, pp. 1846-1849.
[9]	United Kingdom Accreditation Service, “The Expression of Uncertainty and Confidence in Measurement,” United Kingdom Accreditation Service, London, 1997.