Analytical and Experimental Study on the Effect of Air-Core Coil Parameters on Magnetic Force Used in a Linear Optical Scanner

Authors: Loke Kean Koay, Horizon Gitano-Briggs, Mani Maran Ratnam

Abstract:

Today air-core coils (ACC) are a viable alternative to ferrite-core coils in a range of applications due to their low induction effect. An analytical study was carried out and the results were used as a guide to understand the relationship between the magnet-coil distance and the resulting attractive magnetic force. Four different ACC models were fabricated for experimental study. The variation in the models included the dimensions, the number of coil turns and the current supply to the coil. Comparison between the analytical and experimental results for all the models shows an average discrepancy of less than 10%. An optimized ACC design was selected for the scanner which can provide maximum magnetic force.

Keywords: Air-Core Coils, Electromagnetic, Linear Optical Scanner

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1082730

References:

[1] Asada N., Takeuchi M., Vaganov V., and Belov N., 2000, "Silicon micro-optical scanner," Sensors and Actuators A: Physical, 83(1-3), pp. 284-290.
[2] Xiang S., Chen S., Wu X., Xiao D., and Zheng X., 2010, "Study on Fast Linear Scanning for a New Laser Scanner," Opt. Laser Technol., 42(1), pp. 42-46.
[3] Zhou J., Yin H., and Wang Y., 2009, "Research on the Structure and Dynamic Characteristics of a Fast-Steering Mirror," Proc. SPIE, 7281, p. 72810J-72810J-5.
[4] Koay L. K., and Gitano-Briggs H., 2011, "Design and Optimization of Mechanically Resonant Torsional Spring Mechanism for Laser Light Dispersion Applications," ASME J Mech. Des., 133(1), p. 014504.
[5] Remy M., Lemarquand G., Castagnede B., Guyader G., and Renault T., 2008, "Ironless and Leakage Free Voice-Coil Motor Made of Bonded Magnets," Most, 44(11), pp. 4289-4292.
[6] Jung K. S., 2002, "Development of a novel maglev positioner with self-stabilizing property," Mechanical Engineering, 12, pp. 771-790.
[7] Al W., 2002, Microcontroller Project Using the Basic Stamp, Focal Press.
[8] Wangness R. K., 1979, Electromagnetic Fields, John Wiley & Sons, New York.