Study on Model Identification and Pre-Differential 2-DOF PID Flow Control Algorithm for Cooling Processes

냉각 프로세서의 모델규명 및 선행미분형 2 자유도 PID 유량 제어 알고리즘에 관한 연구

  • Hwang, I-Cheol (Dept. of Mechtronics Engineering, Dongeui Univ.) ;
  • Park, Cheol-Jae (School of Automotive/Industrial/Mechanical Engineering, Daegu Univ.)
  • 황이철 (동의대학교 메카트로닉스공학과) ;
  • 박철재 (대구대학교 자동차/산업/기계공학부)
  • Received : 2010.07.05
  • Accepted : 2010.10.18
  • Published : 2010.12.01


This study focuses on model identification and a 2-DOF PID control algorithm for cooling processes; a pneumatic butterfly-type control valve is used for this purpose. The mathematical model is a transfer function composed of a time delay and a second-order delay system. The control valve is identified as a first-order delay system with a time delay and included in the controlled plant. From the experimental data sets for a demo plant, the model parameters are identified, and the 2-DOF PID control gains are analytically derived by Kitamori's method. We show via a computer simulation and an experimental test that the performance of the proposed 2-DOF PID control system is better than that of a conventional 1-DOF PID control system.


Butterfly-Type Control Valve;Model Identification;Flow Control;2-DOF PI-D Control


Supported by : 동의대학교


  1. Kimura, T., Tanaka, T., Fujimoto, K. and Ogawa, K., 1995, "Hydrodynamic Characteristics of Butterfly Valve-Prediction of Pressure Loss Characteristics," ISA Transactions, Vol. 34, pp. 319-326.
  2. Ogawa, K. and Kimura, T., 1995, "Hydrodynamic Characteristics of Butterfly Valve-Prediction of Torque Characteristics," ISA Transactions, Vol. 34, pp. 327-333.
  3. Messina, A., Giaaaoccaro, N. I. and Gentile, A., 2005, "Experimenting and Modelling the Dynamics of Pneumatic Actuators Controlled by the PWM Technique," Mechatronics, Vol. 15, pp. 859-881.
  4. Hwang, I. C. and Park, C. J., 2009, "Study on the Modeling of a Pneumatic Butterfly-Type Control Valve," Proceedings of the KSME 2009 Spring Annual Meeting, pp. 174-177.
  5. Tsuda, 1992, "PID Control," Jochang Press, The Japan Society of System Control Information.

Cited by

  1. Independent Cooling Controller for Temperature Control of High Strength and Atmosphere Corrosion Resisting Steel in Hot Strip Mills vol.39, pp.3, 2015,