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Minimal curvature-constrained networks

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Abstract

This paper introduces an exact algorithm for the construction of a shortest curvature-constrained network interconnecting a given set of directed points in the plane and a gradient descent method for doing so in 3D space. Such a network will be referred to as a minimum Dubins tree, since its edges are Dubins paths (or slight variants thereof). The problem of constructing a minimum Dubins tree appears in the context of underground mining optimisation, where the objective is to construct a least-cost network of tunnels navigable by trucks with a minimum turning radius. The Dubins tree problem is similar to the Steiner tree problem, except the terminals are directed and there is a curvature constraint. We propose the minimum curvature-constrained Steiner point algorithm for determining the optimal location of the Steiner point in a 3-terminal network. We show that when two terminals are fixed and the third varied in the planar version of the problem, the Steiner point traces out a limaçon.

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Kirszenblat, D., Sirinanda, K.G., Brazil, M. et al. Minimal curvature-constrained networks. J Glob Optim 72, 71–87 (2018). https://doi.org/10.1007/s10898-018-0625-2

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  • DOI: https://doi.org/10.1007/s10898-018-0625-2

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