Get access

Improved frequency response model identification method for processes with initial cyclic-steady-state

Authors

  • Yu Jin Cheon,

    1. Dept. of Chemical Engineering, Pohang University of Science and Technology, San 31 Hyoja Dong, Pohang 790-784, South Korea
    Search for more papers by this author
  • Su Whan Sung,

    Corresponding author
    1. Dept. of Chemical Engineering, Kyungpook National University, 1370 Sankyeok-dong, Buk-gu, Daegu 702-701, South Korea
    • Dept. of Chemical Engineering, Kyungpook National University, 1370 Sankyeok-dong, Buk-gu, Daegu 702-701, South Korea
    Search for more papers by this author
  • Jietae Lee,

    1. Dept. of Chemical Engineering, Kyungpook National University, 1370 Sankyeok-dong, Buk-gu, Daegu 702-701, South Korea
    Search for more papers by this author
  • Cheol Ho Je,

    1. Dept. of Chemical Engineering, Kyungpook National University, 1370 Sankyeok-dong, Buk-gu, Daegu 702-701, South Korea
    Search for more papers by this author
  • In-Beum Lee

    Corresponding author
    1. Dept. of Chemical Engineering, Pohang University of Science and Technology, San 31 Hyoja Dong, Pohang 790-784, South Korea
    • Dept. of Chemical Engineering, Pohang University of Science and Technology, San 31 Hyoja Dong, Pohang 790-784, South Korea
    Search for more papers by this author

Abstract

A new nonparametric process identification method is proposed to obtain the frequency response model from given process input and output data. The proposed algorithm can estimate exact models for all desired frequencies. It is applicable to various process conditions (initial/final steady-state, initial steady-state/final cyclic-steady-state, and initial/final cyclic-steady-state) and requires a smaller amount of memory than previous methods. Also, it provides the exact models even in the presence of a static disturbance and shows an acceptable robustness to measurement noises. © 2011 American Institute of Chemical Engineers AIChE J, 2011

Get access to the full text of this article

Ancillary