Robust flight controller design using H-infinity loop-shaping and dynamic inversion techniques

Smit, Martin; Craig, I.K.

doi:10.2514/6.1998-4132

Cited by 7 publications

(1 citation statement)

References 12 publications

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“…Inverse dynamics and H-infinity techniques have been used together in [22,23]. In both of these cases, they are used in different control loops where inverse dynamics eliminates the need for gain scheduling, and the H-infinity controller designed with additional shaping filters provides reference tracking and robustness.…”

Section: Introductionmentioning

confidence: 99%

Comparative Study of Different Algorithms for a Flight Control System Design and the Potentiality of Their Integration with a Sidestick

2021

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The modern trend of developing highly automated aircraft is characterized by a transition from traditional methods and technical solutions to innovative approaches in order to control the system, inceptor and display design. This paper deals with the development and comparison of flight control system algorithms based on inverse dynamics, H-infinity and traditional feedback methods. The integration of a controller based on inverse dynamics with a novel type of sidestick, shaping the pilot output signal such that it is proportional to the control force (force sensing control—FSC), is studied. The inverse dynamics-based controller is chosen, as it provides a variance of error that is up to 2.3 times less than that of the feedback gains and up to 1.5 times less than that of the H-infinity controller in a pitch tracking task. The synergetic effect arising from the proposed integration is also evaluated. The evaluation of the effectiveness of the methods is carried out through mathematical modeling of the pilot–aircraft system and ground-based simulations on a helicopter mathematical model in a pitch tracking task.

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Section: Introductionmentioning

confidence: 99%