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Multirobot Data Gathering Under Buffer Constraints and Intermittent Communication
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DOI：10.1109/TRO.2018.2830370.png)
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摘要
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We consider a team of heterogeneous robots, which are deployed within a common workspace to gather different types of data. The robots have different roles due to different capabilities: some gather data from the workspace (source robots) and others receive data from source robots and upload them to a data center (relay robots). The data-gathering tasks are specified locally to each source robot as high-level linear temporal logic formulas, which capture the different types of data that need to be gathered at different regions of interest. All robots have a limited buffer to store the data. Thus, the data gathered by source robots should be transferred to relay robots before their buffers overflow, respecting at the same time a limited communication range for all robots. The main contribution of thiswork is a distributed motion coordination and intermittent communication scheme that guarantees the satisfaction of all local tasks, while obeying the above constraints. The robot motion and interrobot communication are closely coupled and coordinated during runtime by scheduling intermittent meeting events to facilitate the local plan execution. We present both numerical simulations and experimental studies to demonstrate the advantages of the proposed method over existing approaches that predominantly require all-time network connectivity.
Keyword:
Intermittent communication
linear temporal logic (LTL)
motion and task planning
networked robots
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