Modeling and control of thermal microsystems

Yong Joon Lee, Su Whan Sung, Dae Sung Yoon, Geunbae Lim, Sunwon Park

Research output: Contribution to journalConference articlepeer-review

1 Citation (Scopus)


A thermal microsystem is developed which consists of a microreactor integrated with a platinum sensor/heater, and automation equipment/software such as data acquisition system, control program and graphic user interface. From the control point of view, we analyze the dynamic characteristics of the fabricated microreactor and find some interesting dynamic features. On the basis of the analysis, we suggest an appropriate model structure and estimate the model parameters using the prediction error identification method. Requirements for a high-performance operation are discussed and a nonlinear control strategy is proposed to linearize the nonlinear dynamics of the thermal microsystem. We determine the parameters of the nonlinear controller using the optimal tuning method. The developed thermal microsystem shows much better control performances compared to commercial polymerase chain reaction (PCR) thermal cyclers. We successfully demonstrate the PCR of plasmid DNA using the thermal microsystem.

Original languageEnglish
Pages (from-to)105-111
Number of pages7
JournalIFAC Proceedings Volumes (IFAC-PapersOnline)
Issue number1
Publication statusPublished - 2004
Externally publishedYes
Event7th International Symposium on Advanced Control of Chemical Processes, ADCHEM 2003 - , Hong Kong
Duration: 2004 Jan 112004 Jan 14

Bibliographical note

Funding Information:
This work is supported by the BK21 Project and Center for Ultramicrochemical Process Systems sponsored by KOSEF.

Publisher Copyright:
Copyright © IFAC 2003


  • Nonlinear Control
  • PID Controller
  • Polymerase Chain Reaction
  • System Identification
  • Thermal Microsystems

ASJC Scopus subject areas

  • Control and Systems Engineering


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