Nonlinear reference tracking control of a gas turbine with load torque estimation

B. Pongrácz, P. Ailer, K. M. Hangos, G. Szederkényi

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10 Citations (Scopus)


Input-output linearization-based adaptive reference tracking control of a low-power gas turbine model is presented in this paper. The gas turbine is described by a third-order nonlinear input-affine state-space model, where the manipulable input is the fuel mass flowrate and the controlled output is the rotational speed. The stability of the one-dimensional zero dynamics of the controlled plant is investigated via phase diagrams. The input-output linearizing feedback is extended with a load torque estimator algorithm resulting in an adaptive feedback scheme. The tuning of controller parameters is performed considering three main design goals: appropriate settling time, robustness against environmental disturbances and model parameter uncertainties, and avoiding the saturation of the actuator. Simulations show that the closed-loop system is robust with respect to the variations in uncertain model and environmental parameters and its performance satisfies the defined requirements.

Original languageEnglish
Pages (from-to)757-773
Number of pages17
JournalInternational Journal of Adaptive Control and Signal Processing
Issue number8
Publication statusPublished - Oct 1 2008



  • Adaptive control
  • Gas turbine
  • Input-output linearization
  • Reference tracking

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Signal Processing
  • Electrical and Electronic Engineering

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