Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Limitations of a PI controller for a first-order nonlinear process with dead time.

R Anandanatarajan1, M Chidambaram, T Jayasingh

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

ISA Transactions
|May 3, 2006
PubMed
Summary

This study addresses the nonlinear conical tank level process, demonstrating limitations of conventional PI controllers. A gain-scheduled controller is proposed and shown to be simple and effective for this challenging control problem.

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

An enhanced transformer model for detecting 1p36 deletion syndrome.

Molecular genetics and genomics : MGG·2026
Same author

Floating Knee Injuries: Beyond Bony Fractures of Femur and Tibia.

Indian journal of orthopaedics·2026
Same author

Tunnel-Less Medial Collateral Ligament Reconstruction in MLKI: A Novel Technique to Prevent Tunnel Convergence.

Indian journal of orthopaedics·2025
Same author

Knee Instability Following Fractures Around the Knee Joint: Diagnostic Dilemma and Management Challenges.

Indian journal of orthopaedics·2024
Same author

Long-Term Outcomes of Gastrocnemius V-Y Plasty Gastrosoleus Fascial Turndown Flap for Chronic Tendo-achilles Injuries with Complex Gap (Kuwada Type IV Injuries).

Indian journal of orthopaedics·2022
Same author

Total Elbow Arthroplasty as Treatment of Non-union with Bone Loss of Distal Humerus - A Case Report.

Journal of orthopaedic case reports·2021

Area of Science:

  • Process Control
  • Nonlinear Systems
  • Chemical Engineering

Background:

  • Conical tank level processes exhibit inherent nonlinearity, with time constants and gains varying with the process variable (level).
  • Conventional Proportional-Integral (PI) controllers, tuned using standard methods like Ziegler-Nichols, often struggle with such parameter variations.
  • Introducing deliberate dead time further complicates the control challenge.

Purpose of the Study:

  • To investigate the performance limitations of a conventional PI controller for a nonlinear conical tank level process.
  • To analyze the impact of system parameter variations on controller performance.
  • To propose and evaluate a gain-scheduled controller for improved control of the conical tank level process.

Main Methods:

Related Experiment Videos

  • Simulation and experimental analysis of servo and regulatory responses.
  • Evaluation of controller performance at various operating points and for different set-point and load changes.
  • Development and testing of a gain-scheduled controller architecture.

    • Main Results:

    • Conventional PI controllers tuned at a nominal point show performance degradation as process parameters vary.
    • The benchmark system clearly illustrates how parameter variations affect controller performance.
    • The proposed gain-scheduled controller effectively handles the nonlinearities and parameter variations.

    Conclusions:

    • Gain scheduling offers a simple yet effective solution for controlling nonlinear processes with time-varying parameters.
    • The presented gain-scheduled controller demonstrates superior performance compared to conventional PI control in this application.
    • This work provides a valuable benchmark for understanding and addressing control challenges in nonlinear systems.