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Biologically inspired visual sensing and flight Control

Published online by Cambridge University Press:  04 July 2016

G. L. Barrows,
J. S. Chahl and
M. V. Srinivasan
G. L. Barrows
Affiliation:
Centeye Washington, USA
J. S. Chahl
Affiliation:
Australian National University Canberra, Australia
M. V. Srinivasan
Affiliation:
Australian National University Canberra, Australia
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Abstract

There is increased interest in new classes of mini- and micro-UAVs with sizes ranging from one metre to ten centimetres. Many envisioned applications of such UAVs require them to be able to fly close to the ground in complex environments. The difficulties associated with flying in such environments coupled with the reduced payload capacity of such airframes means that new methods of sensing and control need to be considered. Good models for such methods are found in the world of flying insects. One particular visual cue used by insects is optic flow, which is the apparent visual motion seen by the insect as a result of its motion through the environment. This paper discusses several research efforts aimed at developing new sensing and control algorithms inspired by insect vision and flight behaviors. These efforts are part of DARPA's controlled biological and biomimetic systems (CBBS) programme. In these (and related) efforts, many elegant control stratagems have been discovered which suggest that simple reflexive schemes combined with the measurement of optic flow may be sufficient to provide many aspects of autonomous navigation in complex environments. Furthermore, these efforts are implementing these behaviors in real flying UAV platforms by using novel hardware and software to measure optic flow, and inserting optic flow measurements into a control loop using a combination of ‘best engineering approaches’ with inspiration taken from biology. This has resulted in fixed and rotary-wing mini-UAVs that are able to hold an altitude and perform terrain following.

Information

Type
Research Article
Information
The Aeronautical Journal , Volume 107 , Issue 1069 , March 2003, pp. 159 - 168
Copyright
Copyright © Royal Aeronautical Society 2003 

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