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arXiv 2402.18345cs.RO
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使用排列不变神经网络解决多实体机器人问题

Solving Multi-Entity Robotic Problems Using Permutation Invariant Neural Networks

ETH Zurich(苏黎世联邦理工学院);Swiss-Mile Robotics AG(Swiss-Mile机器人公司)

Tianxu An, Joonho Lee, Marko Bjelonic, Flavio De Vincenti, Marco Hutter

AI总结:

针对多实体机器人控制的可扩展性与实体分配问题,提出基于排列不变神经网络和无模型强化学习的去中心化策略,并在仿真与真实四足机器人实验中验证其零样本适应及协作性能。

摘要:

现实世界机器人应用中的挑战往往源于管理多个动态变化的实体,例如邻近机器人、可操作对象和导航目标。现有的多智能体控制策略面临可扩展性限制,难以处理任意数量的实体。此外,它们通常依赖人工设计的启发式方法在智能体之间分配实体。我们提出一种数据驱动方法来解决这些限制,通过引入使用在仿真中训练的神经网络策略的去中心化控制系统。借助排列不变神经网络架构和无模型强化学习,我们的方法使控制智能体能够自主确定不同实体的相对重要性,而不会受到排序偏差或固定容量限制。我们通过涉及多个轮腿四足机器人的仿真和真实世界实验验证了我们的方法,展示了它们的协作控制能力。我们通过三个示例性多实体问题的实验证明了架构选择的有效性。我们的分析强调了端到端训练的排列不变编码器在多对象操作或多目标导航问题中实现可扩展性和提升任务性能方面的关键作用。我们的策略能够以零样本方式管理不同数量的实体,展现出接近最优的自主任务分配和避障行为,进一步证明了其适应性。

英文摘要:

Challenges in real-world robotic applications often stem from managing multiple, dynamically varying entities such as neighboring robots, manipulable objects, and navigation goals. Existing multi-agent control strategies face scalability limitations, struggling to handle arbitrary numbers of entities. Additionally, they often rely on engineered heuristics for assigning entities among agents. We propose a data driven approach to address these limitations by introducing a decentralized control system using neural network policies trained in simulation. Leveraging permutation invariant neural network architectures and model-free reinforcement learning, our approach allows control agents to autonomously determine the relative importance of different entities without being biased by ordering or limited by a fixed capacity. We validate our approach through both simulations and real-world experiments involving multiple wheeled-legged quadrupedal robots, demonstrating their collaborative control capabilities. We prove the effectiveness of our architectural choice through experiments with three exemplary multi-entity problems. Our analysis underscores the pivotal role of the end-to-end trained permutation invariant encoders in achieving scalability and improving the task performance in multi-object manipulation or multi-goal navigation problems. The adaptability of our policy is further evidenced by its ability to manage varying numbers of entities in a zero-shot manner, showcasing near-optimal autonomous task distribution and collision avoidance behaviors.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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