Title
Equitable persistent coverage of non-convex environments with graph-based planning
Abstract
AbstractIn this article, we tackle the problem of persistently covering a complex non-convex environment with a team of robots. We consider scenarios where the coverage quality of the environment deteriorates with time, requiring every point to be constantly revisited. As a first step, our solution finds a partition of the environment where the amount of work for each robot, weighted by the importance of each point, is equal. This is achieved using a power diagram and finding an equitable partition through a provably correct distributed control law on the power weights. Compared with other existing partitioning methods, our solution considers a continuous environment formulation with non-convex obstacles. In the second step, each robot computes a graph that gathers sweep-like paths and covers its entire partition. At each planning time, the coverage error at the graph vertices is assigned as weights of the corresponding edges. Then, our solution is capable of efficiently finding the optimal open coverage path through the graph with respect to the coverage error per distance traversed. Simulation and experimental results are presented to support our proposal.
Year
DOI
Venue
2019
10.1177/0278364919882082
Periodicals
Keywords
Field
DocType
Persistent coverage, multi-robot system, equitable partitioning, non-convex environments, path planning
Motion planning,Graph,Mathematical optimization,Regular polygon,Control engineering,Robot,Mathematics
Journal
Volume
Issue
ISSN
38
14
0278-3649
Citations 
PageRank 
References 
0
0.34
0
Authors
4
Name
Order
Citations
PageRank
jose manuel palaciosgasos132.06
Danilo Tardioli211911.11
Eduardo Montijano321422.27
Carlos Sagüés444339.22