Self-Tuning Nonlinear Control System Design for Roll-to-Roll Printing Systems

Seok Kyoon Kim, Choon Ki Ahn

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)


This article proposes intelligent nonlinear web tension and velocity controllers for roll-to-roll printing systems. The introduction of the perturbed machine model makes it easy to handle machine nonlinearities and parameter variations, simultaneously, with the simple static and first-order dynamic compensator. The feedback gains of web tension and velocity are automatically updated by the proposed self-tuner, which corresponds with the first feature of this article. As the second feature, the introduction of disturbance observers in place of the regulation error integrators provides an improved disturbance rejection performance and offset-free property, which is rigorously analyzed based on the Lyapunov stability criterion. The closed-loop performance improvement is numerically demonstrated under various scenarios using MATLAB/Simulink.

Original languageEnglish
Article number9072557
Pages (from-to)2667-2676
Number of pages10
JournalIEEE/ASME Transactions on Mechatronics
Issue number6
Publication statusPublished - 2020 Dec


  • Control system
  • disturbance observer
  • printing system
  • roll-to-roll (R2R) printing
  • self-tuner

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Computer Science Applications
  • Electrical and Electronic Engineering


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