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Article

Grid-Based and Polytopic Linear Parameter-Varying Modeling of Aeroelastic Aircraft with Parametric Control Surface Design

1
Systems and Control Lab, Institute for Computer Science and Control, Kende u. 13-17, 1111 Budapest, Hungary
2
Systems Technology Inc., Hawthorne, CA 90250, USA
*
Author to whom correspondence should be addressed.
Fluids 2020, 5(2), 47; https://doi.org/10.3390/fluids5020047
Received: 11 February 2020 / Revised: 20 March 2020 / Accepted: 1 April 2020 / Published: 10 April 2020
(This article belongs to the Special Issue Flow and Aeroelastic Control)
The main direction of aircraft design today and in the future is to achieve more lightweight and higher aspect ratio airframes with the aim to improve performance and to reduce operating costs and harmful emissions. This promotes the development of flexible aircraft structures with enhanced aeroelastic behaviour. Increased aeroservoelastic (ASE) effects such as flutter can be addressed by active control technologies. Control design for flutter suppression heavily depends on the control surface sizing. Control surface sizing is traditionally done in an iterative process, in which the sizing is determined considering solely engineering rules and the control laws are designed afterwards. However, in the case of flexible vehicles, flexible dynamics and rigid body control surface sizing may become coupled. This coupling can make the iterative process lengthy and challenging. As a solution, a parametric control surface design approach can be applied, which includes limitations of control laws in the design process. For this a set of parametric models is derived in the early stage of the aircraft design. Therefore, the control surfaces can be optimized in a single step with the control design. The purpose of this paper is to describe as well as assess the developed control surface parameterized ASE models of the mini Multi Utility Technology Testbed (MUTT) flexible aircraft, designed at the University of Minnesota. The ASE model is constructed by integrating aerodynamics, structural dynamics and rigid body dynamics. In order to be utilized for control design, control oriented, low order linear parameter-varying (LPV) models are developed using the bottom-up modeling approach. Both grid- and polytopic parametric LPV models are obtained and assessed. View Full-Text
Keywords: co-design; flutter suppression; LPV design; aeroservoelastic models co-design; flutter suppression; LPV design; aeroservoelastic models
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MDPI and ACS Style

Mocsányi, R.D.; Takarics, B.; Kotikalpudi, A.; Vanek, B. Grid-Based and Polytopic Linear Parameter-Varying Modeling of Aeroelastic Aircraft with Parametric Control Surface Design. Fluids 2020, 5, 47. https://doi.org/10.3390/fluids5020047

AMA Style

Mocsányi RD, Takarics B, Kotikalpudi A, Vanek B. Grid-Based and Polytopic Linear Parameter-Varying Modeling of Aeroelastic Aircraft with Parametric Control Surface Design. Fluids. 2020; 5(2):47. https://doi.org/10.3390/fluids5020047

Chicago/Turabian Style

Mocsányi, Réka D., Béla Takarics, Aditya Kotikalpudi, and Bálint Vanek. 2020. "Grid-Based and Polytopic Linear Parameter-Varying Modeling of Aeroelastic Aircraft with Parametric Control Surface Design" Fluids 5, no. 2: 47. https://doi.org/10.3390/fluids5020047

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