Coordination-free Multi-robot Path Planning for Congestion Reduction Using Topological Reasoning
We consider the problem of multi-robot path planning in a complex, cluttered environment with the aim of reducing overall congestion in the environment, while avoiding any inter-robot communication or coordination. Such limitations may exist due to lack of communication or due to privacy restriction...
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          | Published in | Journal of intelligent & robotic systems Vol. 108; no. 3; p. 50 | 
|---|---|
| Main Authors | , , | 
| Format | Journal Article | 
| Language | English | 
| Published | 
        Dordrecht
          Springer Netherlands
    
        01.07.2023
     Springer Nature B.V  | 
| Subjects | |
| Online Access | Get full text | 
| ISSN | 0921-0296 1573-0409 1573-0409  | 
| DOI | 10.1007/s10846-023-01878-3 | 
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| Abstract | We consider the problem of multi-robot path planning in a complex, cluttered environment with the aim of reducing overall congestion in the environment, while avoiding any inter-robot communication or coordination. Such limitations may exist due to lack of communication or due to privacy restrictions (for example, autonomous vehicles may not want to share their locations or intents with other vehicles or even to a central server). The key insight that allows us to solve this problem is to stochastically distribute the robots across different routes in the environment by assigning them paths in different topologically distinct classes, so as to lower congestion and the overall travel time for all robots in the environment. We outline the computation of topologically distinct paths in a spatio-temporal configuration space and propose methods for the stochastic assignment of paths to the robots. A fast replanning algorithm and a potential field based controller allow robots to avoid collision with nearby agents while following the assigned path. Our simulation and experiment results show a significant advantage over shortest path following under such a coordination-free setup. | 
    
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| AbstractList | We consider the problem of multi-robot path planning in a complex, cluttered environment with the aim of reducing overall congestion in the environment, while avoiding any inter-robot communication or coordination. Such limitations may exist due to lack of communication or due to privacy restrictions (for example, autonomous vehicles may not want to share their locations or intents with other vehicles or even to a central server). The key insight that allows us to solve this problem is to stochastically distribute the robots across different routes in the environment by assigning them paths in different topologically distinct classes, so as to lower congestion and the overall travel time for all robots in the environment. We outline the computation of topologically distinct paths in a spatio-temporal configuration space and propose methods for the stochastic assignment of paths to the robots. A fast replanning algorithm and a potential field based controller allow robots to avoid collision with nearby agents while following the assigned path. Our simulation and experiment results show a significant advantage over shortest path following under such a coordination-free setup. | 
    
| ArticleNumber | 50 | 
    
| Author | Wang, Xiaolong Sahin, Alp Bhattacharya, Subhrajit  | 
    
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| SubjectTerms | Algorithms Artificial Intelligence Collision avoidance Configuration space path planning Congestion Control Coordination Electrical Engineering Engineering Mechanical Engineering Mechatronics Multiple robots Potential fields Regular Paper Robotics Robots Topical collection on Unmanned Systems Trajectory planning Travel time  | 
    
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| Title | Coordination-free Multi-robot Path Planning for Congestion Reduction Using Topological Reasoning | 
    
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