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A Study on the First Order Plus Time Delay Model Identification from Noisy Step Responses  

Ju, Seungmin (Department of Chemical Engineering, Kyungpook National University)
Kim, Sung Jin (Department of Chemical Engineering, Kyungpook National University)
Byeon, Jeonguk (Department of Chemical Engineering, Kyungpook National University)
Chun, Daewoong (Department of Chemical Engineering, Kyungpook National University)
Sung, Su Whan (Department of Chemical Engineering, Kyungpook National University)
Lee, Jietae (Department of Chemical Engineering, Kyungpook National University)
Publication Information
Korean Chemical Engineering Research / v.46, no.5, 2008 , pp. 949-957 More about this Journal
Abstract
Estimating the first order plus time delay model on the basis of the step responses has been widely used in industry for the tuning of PID controllers. Even though various model identification methods from simple graphical approaches to complicated approaches based on least squares method have been proposed, simple approaches to incorporate noisy step responses are rarely available. In this research, we will compare and analyze recent approaches using the integrals of the step responses and develop an improved identification method to incorporate real situations more effectively.
Keywords
Step Response; Noise; FOPTD Model Identification; Integral;
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