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Mathematical Properties of Generalized Shape Expansion-Based Motion Planning Algorithms

2021-02-23 04:09:04
Adhvaith Ramkumar, Vrushabh Zinage, Satadal Ghosh
arXiv_RO
       
Abstract

Motion planning is an essential aspect of autonomous systems and robotics and is an active area of research. A recently-proposed sampling-based motion planning algorithm, termed 'Generalized Shape Expansion' (GSE), has been shown to possess significant improvement in computational time over several existing well-established algorithms. The GSE has also been shown to be probabilistically complete. However, asymptotic optimality of the GSE is yet to be studied. To this end, in this paper we show that the GSE algorithm is not asymptotically optimal by studying its behaviour for the promenade problem. In order to obtain a probabilistically complete and asymptotically optimal generalized shape-based algorithm, a modified version of the GSE, namely 'GSE*' algorithm, is subsequently presented. The forementioned desired mathematical properties of the GSE* algorithm are justified by its detailed analysis. Numerical simulations are found to be in line with the theoretical results on the GSE* algorithm.

Abstract (translated)

URL

https://arxiv.org/abs/2102.11478

PDF

https://arxiv.org/pdf/2102.11478.pdf

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