A case study involving continuous system methods of inverse simulation for an unmanned aerial vehicle application

Murray-Smith, D.J. and McGookin, E.W. (2015) A case study involving continuous system methods of inverse simulation for an unmanned aerial vehicle application. Proceedings of the Institution of Mechanical Engineers Part G: Journal of Aerospace Engineering, 229(14), pp. 2700-2717. (doi:10.1177/0954410015586842)

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Abstract

Inverse simulation allows input time histories to be found that generate specified outputs for non-linear dynamic models in cases where analytical methods of inversion present difficulties. The two approaches considered involve continuous system simulation principles. One is an approximate differentiation method while the second involves feedback principles. These approaches are compared for a non-linear six-degrees-of-freedom flight-mechanics model of a fixed-wing unmanned aerial vehicle incorporating actuator sub-models with saturation and rate limits. Additional insight is provided through analysis of a linearised version of the vehicle model. It is concluded that both the continuous system simulation methods for finding inverse solutions, for the type of application described in this paper, provide a useful alternative to more conventional iterative methods of inverse simulation based on discrete models. In many cases, including those involving hard non-linearities in control surface actuator sub-systems, they allow issues of vehicle handling and manoeuvrability to be addressed in a more direct fashion than is possible using conventional simulation methods alone.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Murray-Smith, Professor David and McGookin, Dr Euan
Authors: Murray-Smith, D.J., and McGookin, E.W.
Subjects:T Technology > T Technology (General)
T Technology > TL Motor vehicles. Aeronautics. Astronautics
College/School:College of Science and Engineering > School of Engineering
Research Group:Aerospace Sciences
Journal Name:Proceedings of the Institution of Mechanical Engineers Part G: Journal of Aerospace Engineering
Publisher:Professional Engineering Publishing
ISSN:0954-4100
ISSN (Online):2041-3025
Copyright Holders:Copyright © 2015 IMechE
First Published:First published in Proceedings of the Institution of Mechanical Engineers Part G: Journal of Aerospace Engineering 229(14): 2700-2717
Publisher Policy:Reproduced in accordance with the publisher copyright policy

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