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Related Experiment Videos

Design of controller using variable transformations for a nonlinear process with dead time.

R Anandanatarajan1, M Chidambaram, T Jayasingh

  • 1Pondicherry Engineering College, Pondicherry, India. annanda_natarajan@yahoo.com

ISA Transactions
|February 3, 2005
PubMed
Summary

A novel globally linearized controller (GLC) for nonlinear systems with dead time is introduced. This controller, utilizing Smith prediction or Newton

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Area of Science:

  • Chemical Engineering
  • Control Systems Engineering

Background:

  • Nonlinear systems with dead time present significant control challenges.
  • Existing controllers may not effectively manage the dynamics of such systems.

Purpose of the Study:

  • To propose a globally linearized controller (GLC) for first-order nonlinear systems with dead time.
  • To compare the performance of the proposed GLC with conventional controllers.

Main Methods:

  • Development of a GLC based on Smith prediction in the transformed domain.
  • Application of Newton's extrapolation method for controller design.
  • Simulation and experimental validation on a conical tank level process.

Main Results:

  • The proposed GLC demonstrates effective control of a nonlinear system with dead time.

Related Experiment Videos

  • Performance comparison shows advantages over conventional PI and Smith PI controllers.
  • Experimental results validate the controller's practical applicability.

    • Conclusions:

    • The developed GLC offers a robust solution for controlling nonlinear systems with dead time.
    • The controller provides improved performance compared to traditional methods.
    • The study confirms the feasibility of the proposed control strategy in real-world applications.