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An alternative design approach for Fractional Order Internal Model Controllers for time delay systems.

C I Muresan1, I Birs1,2,3, R De Keyser2,3

  • 1Automation Department, Technical University of Cluj-Napoca, Memorandumului 28, 400114 Cluj-Napoca, Romania.

Journal of Advanced Research
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Summary
This summary is machine-generated.

This study introduces a new Fractional Order Internal Model Control (FO-IMC) design for time delay systems. The novel method improves performance over existing FO-IMC tuning strategies.

Keywords:
Experimental validationFractional order controlInternal model controlTime delay systemsVertical take-off and landing

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Area of Science:

  • Control Engineering
  • Fractional Calculus
  • System Identification

Background:

  • Fractional Order Internal Model Control (FO-IMC) offers advanced control capabilities.
  • Implementing FO-IMC in systems with time delays necessitates approximations for fractional terms and delays.

Purpose of the Study:

  • Propose an alternative FO-IMC controller design procedure.
  • Introduce a novel approximation method for process time delays.
  • Demonstrate the method's efficiency and suitability for time-delay systems.

Main Methods:

  • Develop generalized IMC control laws analytically.
  • Utilize a Non-Rational Transfer Function approach for time delay approximation.

Main Results:

  • Validate the proposed method with numerical examples.
  • Experimentally verify the control strategy on a vertical take-off and landing unit.
  • Compare performance against Taylor series approximation methods for FO-IMC.

Conclusions:

  • The proposed method is validated through both numerical and experimental results.
  • The new FO-IMC design demonstrates superior closed-loop performance.
  • This work extends the FO-IMC control field with a viable alternative design strategy.