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Design of Temperature based Gain Scheduled Controller for Wide Temperature Variation

게인 스케줄링을 이용한 광대역 온도제어기의 설계

  • Jeong, Jae Hyeon (Department of Mechanical System Design Eng., Seoul National Univ. of Sci. & Tech.) ;
  • Kim, Jung Han (Department of Mechanical System Design Eng., Seoul National Univ. of Sci. & Tech.)
  • 정재현 (서울과학기술대학교 기계시스템디자인공학과) ;
  • 김정한 (서울과학기술대학교 기계시스템디자인공학과)
  • Received : 2013.01.18
  • Accepted : 2013.07.12
  • Published : 2013.08.01

Abstract

This paper focused on the design of an efficient temperature controller for a plant with a wide range of operating temperatures. The greater the temperature difference a plant has, the larger the nonlinearity it is exposed to in terms of heat transfer. For this reason, we divided the temperature range into five sections, and each was modeled using ARMAX(auto regressive moving average exogenous). The movement of the dominant poles of the sliced system was analyzed and, based on the variation in the system parameters with temperature, optimal control parameters were obtained through simulation and experiments. From the configurations for each section of the temperature range, a temperature-based gain-scheduled controller (TBGSC) was designed for parameter variation of the plant. Experiments showed that the TBGSC resulted in improved performance compared with an existing proportional integral derivative (PID) controller.

Keywords

References

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