Design of robust controllers for gas turbine engines

D. E. Moellenhoff, S. Vittal Rao, C. A. Skarvan

Research output: Contribution to journalArticlepeer-review

10 Scopus citations


This paper describes robust controller design methodologies for gas turbine engines. A linear state variable model for the engine is derived using partial derivatives. The Linear Quadratic Gaussian with Loop Transfer Recovery (LQG/LTR) and the Parameter Robust Linear Quadratic Gaussian (PRLQG) robust controller design methodologies have been used to design a controller for gas turbine engines. A new method is proposed by combining the features of LQG/LTR and PRLQG methods and yields good robustness properties with respect to both unstructured uncertainties in the frequency domain and structured parameter variations in the time domain. The new procedure is illustrated with the help of an aircraft gas turbine engine model.

Original languageEnglish
Pages (from-to)283-289
Number of pages7
JournalJournal of Engineering for Gas Turbines and Power
Issue number2
StatePublished - Apr 1991


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