Conference Paper

Lateral flight control design for a highly flexible aircraft using a nonsmooth method

Control Syst. Dept., ONERA-CERT, Toulouse, France
DOI: 10.1109/CDC.2009.5400576 Conference: Proceedings of the 48th IEEE Conference on Decision and Control, CDC 2009, combined withe the 28th Chinese Control Conference, December 16-18, 2009, Shanghai, China
Source: DBLP


This paper describes a nonsmooth optimization technique for designing a lateral flight control law for a highly flexible aircraft. Flexible modes and high-dimensional models pose a major challenge to modern control design tools. We show that the nonsmooth approach offers potent and flexible alternatives in this difficult context. More specifically, the proposed technique is used to achieve a mix of frequency domain as well as time domain requirements for a set of different flight conditions.

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Available from: Pierre Apkarian, Jun 10, 2015
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    ABSTRACT: Two LQ-based MIMO controllers (LQG and LQI architectures) for lateral inner loop flight control for a large BlendedWing Body (BWB) passenger aircraft pre-design model are presented. The main control goals are Dutch roll mode damping, coordinated turn, and roll response shaping. An open loop analysis shows that traditional SISO design faces fundamental limitations, so both controller variants are designed as MIMO controllers. Their performance is tuned and evaluated, and their specific properties are discussed and compared. The controllers are validated on various fuel and payload mass cases and fulfill all demanded goals. Ongoing and future research seeks to reduce structural loads and increase passenger comfort using robust control design methods.
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