We consider the problem of multi-robot sensor coverage, which deals with deploying a multi-robot team in an environment and optimizing the sensing quality of the overall environment. As real-world environments involve a variety of sensory information, and individual robots are limited in their available number of sensors, successful multi-robot sensor coverage requires the deployment of robots in such a way that each individual team member’s sensing quality is maximized. Additionally, because individual robots have varying complements of sensors and both robots and sensors can fail, robots must be able to adapt and adjust how they value each sensing capability in order to obtain the most complete view of the environment, even through changes in team composition. We introduce a novel formulation for sensor coverage by multi-robot teams with heterogeneous sensing capabilities that maximizes each robot's sensing quality, balancing the varying sensing capabilities of individual robots based on the overall team composition. We propose a solution based on regularized optimization that uses sparsity-inducing terms to ensure a robot team focuses on all possible event types, and which we show is proven to converge to the optimal solution. Through extensive simulation, we show that our approach is able to effectively deploy amore »
Team Assignment for Heterogeneous Multi-Robot Sensor Coverage through Graph Representation Learning
Sensor coverage is the critical multi-robot problem of maximizing the detection of events in an environment
through the deployment of multiple robots. Large multi-robot
systems are often composed of simple robots that are typically
not equipped with a complete set of sensors, so teams with
comprehensive sensing abilities are required to properly cover
an area. Robots also exhibit multiple forms of relationships
(e.g., communication connections or spatial distribution) that
need to be considered when assigning robot teams for sensor
coverage. To address this problem, in this paper we introduce
a novel formulation of sensor coverage by multi-robot systems
with heterogeneous relationships as a graph representation learning problem. We propose a principled approach based on the
mathematical framework of regularized optimization to learn a
unified representation of the multi-robot system from the graphs
describing the heterogeneous relationships and to identify the
learned representation’s underlying structure in order to assign
the robots to teams. To evaluate the proposed approach, we
conduct extensive experiments on simulated multi-robot systems
and a physical multi-robot system as a case study, demonstrating
that our approach is able to effectively assign teams for heterogeneous multi-robot sensor coverage.
- Award ID(s):
- 1823245
- Publication Date:
- NSF-PAR ID:
- 10340547
- Journal Name:
- International Conference on Robotics and Automation
- Sponsoring Org:
- National Science Foundation
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