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A Study on PID Tuning Technique of a Thermal Environment Chamber  

Shin Younggy (Department of Mechanical Engineering, Sejong University)
Yang Hooncheul (Building Energy Research Center, Korea Institute of Energy Research)
Tae Choon-Seob (Building Energy Research Center, Korea Institute of Energy Research)
Jang Cheol-Yong (Building Energy Research Center, Korea Institute of Energy Research)
Cho Soo (Building Energy Research Center, Korea Institute of Energy Research)
Kim Youngil (School of Architecture, Seoul National University of Technology)
Publication Information
Korean Journal of Air-Conditioning and Refrigeration Engineering / v.17, no.11, 2005 , pp. 1072-1078 More about this Journal
Abstract
The present study has been conducted to tune a PID controller for large thermal systems such as a thermal environment chamber. In spite of large thermal mass of the thermal chamber under test, its response delay time was found to be negligible mainly due to high air recirculation rate. In general, heating and cooling capacities tend to be small compared the size of a thermal environment chamber, which leads to long transient periods of one hour or so. In the study, a PI tuning method is suggested which makes system responses faster while reducing overshoots and hunting by utilizing efficiently proportional band of actuators.
Keywords
PID; Root locus; Thermal environment chamber; Heat pump;
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