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http://dx.doi.org/10.3795/KSME-A.2010.34.12.1917

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

Hwang, I-Cheol (Dept. of Mechtronics Engineering, Dongeui Univ.)
Park, Cheol-Jae (School of Automotive/Industrial/Mechanical Engineering, Daegu Univ.)
Publication Information
Transactions of the Korean Society of Mechanical Engineers A / v.34, no.12, 2010 , pp. 1917-1923 More about this Journal
Abstract
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.
Keywords
Butterfly-Type Control Valve; Model Identification; Flow Control; 2-DOF PI-D Control;
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