Browse > Article
http://dx.doi.org/10.9726/kspse.2013.17.4.139

Control of Magnetic Bearing using ATmega128(Focused on experiments)  

Yang, Joo-Ho (Department of Mechanical System Engineering, Pukyong National University)
Choi, Gyo-Ho (Department of Marine Police & Technology, Gangwon Provincial College)
Choung, Kwang-Gyo (Korea Ship Safety Technology Authority)
Publication Information
Journal of Power System Engineering / v.17, no.4, 2013 , pp. 139-146 More about this Journal
Abstract
Because the magnetic bearing supports levitating body without contact, wear, noise and vibration, it is very useful to high revolution machinery. In this paper we selected ATmega 128, a less expensive and widely used micro controller, for control the magnetic bearing system. And we selected the sampling time and the control gain of PID controller through trial-and-error. The control program of the one board controller utilized lookup table to reduce calculation time, and bit shifting for the integer calculation in instead of floating point calculation. As the results, the controller carried out relatively high speed PID control on sampling time 0.25 ms. At last the rotation test for the magnetic bearing system was carried out by 3 phase induction motor and air turbine.
Keywords
Magnetic Bearing System; Levitating Body; Lookup Table; PID Controller;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
연도 인용수 순위
1 C. H. Kim and J. H. Yang, 1997, "A Study on the Gap Estimation Circuit Design of the Magnetic Levitation System", Journal of the Korean Society for Power System Engineering, Vol. 1, No. 1, pp. 144-153.   과학기술학회마을
2 C. H. Kim and J. H. Yang, 1998, "A Study on the Sensorless Realization of Magnetic Levitation System by Two-Degree-of-freedom Control Method", Journal of the Korean Society of Marine Engineering, Vol. 22, No. 6, pp. 888-893.   과학기술학회마을
3 H. H. Jeong, Y. B. Kim and J. H. Yang, 2009, "The Identification of the Magnetic Bearing control System's Parameters using RCGA", Journal of the Korean Society for Power System Engineering, Vol. 13, No. 4, pp. 68-73.   과학기술학회마을
4 J. H. Yang et al., 2005, "Automatic Control", DooYangSa, Seoul, pp. 394-397.
5 D. J. Lee, J. H. Hong and J. K. Park, 2001, "Basic and Application for the Magnetic Bearing", SigmaPress, Seoul, pp. 25-35.
6 G. H. Choi, J. H. Yang and K. G. Choung, 2012, "Mathematical Modeling about Magnetic Attractive Force of Magnetic Bearing", Journal of the Korean Society for Power System Engineering, Vol. 16, No. 3, pp. 644-684.   과학기술학회마을   DOI   ScienceOn
7 K. G. Choung, J. H. Yang and C. H. Kim, 2011, "Multivariable Control System Design for Magnetic Bearing", Journal of the Korean Society for Power System Engineering, Vol. 15, No. 1, pp. 78-85.   과학기술학회마을
8 Min Sig Kang, 2008, "Sliding Model Control for an Active Magnetic Bearing System", Journal of the Korean Society for Precision Engineering, Vol. 25, No. 12, pp. 82-88.
9 K. G. Choung, 2012, "A study on the Construction of the Magnetic Bearing Control System by ATmega 128", The Graduate School of Pukyong National University, pp. 73-108.