Browse > Article
http://dx.doi.org/10.9726/kspse.2014.18.6.200

PI Controller Design of the Refrigeration System Based on Dynamic Characteristic of the Second Order Model  

Jung, Young-Mi (Department of Refrigeration and Air-conditioning Engineering, Pukyong National University)
Jeong, Seok-Kwon (Department of Refrigeration and Air-conditioning Engineering, Pukyong National University)
Yang, Joo-Ho (Department of Mechanical System Engineering, Pukyong National University)
Publication Information
Journal of Power System Engineering / v.18, no.6, 2014 , pp. 200-206 More about this Journal
Abstract
This paper deals with deterministic PI controller design based on dynamic characteristics for refrigeration system. The temperature control system of an oil cooler is described as a typical 2nd order model of the refrigeration system which has zeros in a transfer function. PI controller gains satisfying control specifications are represented by the dynamic characteristic functions using relationship between the parameters and the control specifications in the model. Phase margin was considered to increase robustness of the oil cooler control system. Furthermore, the influence of zeros in the model to the control specifications was analyzed in detail for improving control performance. The validity of the suggested PI controller design was investigated using the four types of gains which had been already confirmed their control performances through experiments.
Keywords
Refrigeration System; Dynamic characteristic; PI controller; Oil cooler control system;
Citations & Related Records
Times Cited By KSCI : 7  (Citation Analysis)
연도 인용수 순위
1 S. K. Jeong and J. Y. Byun, 2010, "Design of PI and Feedforward Controller for Precise Temperature Control of Oil Cooler System", KSPSE, Vol. 14, No. 6, pp. 89-95.   과학기술학회마을
2 S. K. Jeong, J. Y. Byun, S. H. Kim and J. I. Yoon, 2011, "Precise Temperature Control of Oil Coolers with Hot-gas Bypass Manner for Machine Tools Based on PI and Feedforward Control", KJACR, Vol. 23, No. 2, pp. 111-119.   과학기술학회마을   DOI   ScienceOn
3 Y. M. Jung and S. K. Jeong, 2014, "Optimum PI Controller Design for an Oil Cooler System Using GA", KSPSE, Vol. 18, No. 5, pp. 28-34.   과학기술학회마을   DOI   ScienceOn
4 M. J. Kim, Y. H. Lee, M. O. So, Y. S. Ha, S. W. Hwang and G. K. Jin, 2007, "Tuning Rules of the PID Controller Using RCGAs", Journal of the Korea Society of Marine Engineering, Vol. 31, No. 4, pp. 448-454.   과학기술학회마을   DOI   ScienceOn
5 Y. M. Jung, J. Y. Byun, J. I. Yoon and S. K. Jeong, 2009, "A Study on High Precision Temperature Control of an Oil Cooler for Machine Tools Using Hot-gas Bypass Method", Journal of the Korean Society of Marine Engineering, Vol. 33, No. 7, pp. 1003-1011.   과학기술학회마을   DOI   ScienceOn
6 M. F. Golnaraghi, B. C. Benjamin, 2009, "Automatic Control System", John Wiley & Sons, 9th Edition.
7 Y. K. Shin, 2007, "Automatic Control System Engineering", Intervision, ISBN 978-89-5667-365-3.
8 S. K. Jeong, D. B. Lee and J. I. Yoon, 2012, "Comparison of System Performances of Hot-gas Bypass and Compressor Variable Speed Control of Water Coolers for Machine Tools", KJACR, Vol. 24, No. 1, pp. 1-8.   과학기술학회마을   DOI   ScienceOn
9 H. Li, S. K. Jeong and S. S. You, 2009, "Feedforward Control of Capacity and Superheat for a Variable Speed Refrigeration System", Applied Thermal Engineering, Vol. 29, pp. 1067-1074.   DOI   ScienceOn
10 S. K. Jeong and S. H. Kim, 2011, "Optimum Controller Design of a Water Cooler for Machine Tools Based on the State Space Model", KJACR, Vol. 23, No. 12, pp. 782-790.   과학기술학회마을   DOI   ScienceOn