Flight control design using Robust dynamic inversion and time-scale separation

Jacob Reiner, Gary J. Balas, William L Garrard

Research output: Contribution to journalArticlepeer-review

191 Scopus citations


This paper presents a new method for design of flight controllers for aircraft: feedback linearization coupled with structured singular value (μ) synthesis. Feedback linearization uses natural time-scale separation between fast and slow variables. The linear μ controller enhances robustness to parameter variations and requires no scheduling with flight condition. This methodology is applied to an angle-of-attack command system for longitudinal control of a high performance aircraft. Nonlinear simulations demonstrate that the controller satisfies handling quality requirements, provides good tracking of pilot inputs, and exhibits excellent robustness over a wide range of angles-of-attack and Mach numbers.

Original languageEnglish (US)
Pages (from-to)1493-1504
Number of pages12
Issue number11
StatePublished - Nov 1 1996


  • Aircraft control
  • Nonlinear control
  • Structured singular value


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