Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.6/2006
Título: Longitudinal flight control with a variable span morphing wing
Autor: Sanches, Tiago Nunes
Palavras-chave: Controlador Blatz-Kleinman
Estabilização de voo
Dinâmica de voo longitudinal
Tecnologia Morphing
Controlador robusto
Asa de envergadura variável
Data de Defesa: Out-2012
Editora: Universidade da Beira Interior
Resumo: The present study focuses on the design of a longitudinal flight controller for an unmanned aircraft equipped with dissymmetric variable-span system (VSMW or Variable-Span Morphing Wing). Its primary role consists in the longitudinal flight stabilization of the aeroplane while in levelled cruise flight, although, it was designed to offer longitudinal flight stabilization for other flight phases as well, such as e.g. take-off and landing. The stabilization algorithm relies on the most up-to-date developments in the state-of-the-art LQR and Batz-Kleinman controller techniques to stabilize the aircraft on its intended longitudinal attitude upon any small atmospheric disturbances inflicted. It was designed for the experimental UAV prototype Olharapo equipped with the VSMW, so it can automatically adjust the VSMW overall wingspan in accordance with the flight speed and stabilize the aircraft in the desired attitude, although, its modular concept allows it to be used for different configurations of the aircraft or even for a different aircraft. The development, simulation and testing of the algorithm were done using the MATLAB® software and the aircraft’s stability and control derivatives previously obtained using the XFLR5® software. Minor adaptations of the flight dynamics equations were performed to allow the compatibilization with the VSMW. The required implementation of imposed flight qualities was also performed to ensure proper scaling the controller weight matrix for optimal values. Finally, the algorithm was tested using three different methods: Classic Disturbances Simulation, Sinusoidal Pitch Variation Test Response and Random Pitch Variation Test Response.
Peer review: yes
URI: http://hdl.handle.net/10400.6/2006
Aparece nas colecções:FE - DCA | Dissertações de Mestrado e Teses de Doutoramento

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