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  Rigidity theory in SE(2) for unscaled relative position estimation using only bearing measurements

Zelazo, D., Franchi, A., & Robuffo Giordano, P. (2014). Rigidity theory in SE(2) for unscaled relative position estimation using only bearing measurements. In 13th European Control Conference (ECC 2014) (pp. 2703-2708). Piscataway, NJ, USA: IEEE.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0027-80A4-F Version Permalink: http://hdl.handle.net/21.11116/0000-0001-2D37-0
Genre: Conference Paper

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Zelazo, D, Author
Franchi, A, Author              
Robuffo Giordano, P1, Author              
Affiliations:
1Irisa and Inria Rennes Bretagne Atlantique, Campus de Beaulieu, ou_persistent22              

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 Abstract: This work considers the problem of estimating the unscaled relative positions of a multi-robot team in a common reference frame from bearing-only measurements. Each robot has access to a relative bearing measurement taken from the local body frame of the robot, and the robots have no knowledge of a common or inertial reference frame. A corresponding extension of rigidity theory is made for frameworks embedded in the ˘005Cemph\special Euclidean group\} SE(2)=R2⁽×⁾S1. We introduce definitions describing rigidity for SE(2) frameworks and provide necessary and sufficient conditions for when such a framework is ˘005Cemph\{infinitesimally rigid\} in SE(2). Analogous to the rigidity matrix for point formations, we introduce the ˘005Cemph\{directed bearing rigidity matrix\} and show that an SE(2) framework is infinitesimally rigid if and only if the rank of this matrix is equal to 2|V|minus;4, where |V| is the number of agents in the ensemble. The directed bearing rigidity matrix and its properties are then used in the implementation and convergence proof of a distributed estimator to determine the \{unscaled\}\{\ relative positions in a common frame. Some simulation results are also given to support the analysis.

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 Dates: 2014-06
 Publication Status: Published in print
 Pages: -
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 Rev. Method: -
 Identifiers: DOI: 10.1109/ECC.2014.6862558
BibTex Citekey: ZelazoFR2014
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Title: 13th European Control Conference (ECC 2014)
Place of Event: Strasbourg, France
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Title: 13th European Control Conference (ECC 2014)
Source Genre: Proceedings
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Publ. Info: Piscataway, NJ, USA : IEEE
Pages: - Volume / Issue: - Sequence Number: - Start / End Page: 2703 - 2708 Identifier: ISBN: 978-3-9524269-1-3