用强化学习控制机器人拆解电子废弃物,实现材料循环率-7.2的高效回收。
CIRO7.2: A Material Network with Circularity of -7.2 and Reinforcement-Learning-Controlled Robotic Disassembler
- 基于热力学模型构建材料网络,用强化学习控制机器人拆解
- 拆解4个1公斤部件+3公斤外壳时循环率最低达-7.2
- 适合关注可持续制造与智能拆解的工程师和研究者
矿物资源竞争加剧源于线性经济模式(取-制-弃)。该模式将废弃品视为垃圾而非资源,导致大量难以处理的废弃物。转向循环经济可缓解此问题。本文基于隔室动力学热力学提升循环度指标λ,构建处理两类关键性系数为0.1和0.95的固体材料的材料网络,配备强化学习(RL)控制的机器人拆解单元,处理量为2–7公斤。通过状态前沿的RL算法优化拆解过程,评估其对λ的影响(图1)。当拆解两个1公斤部件时,最高循环度为-2.1;而拆解四个1公斤部件(含3公斤外壳)时,循环度降至-7.2。敏感性分析表明,RL控制器性能对λ的影响随材料数量与关键性增加而增强。本工作提出“循环智能与机器人”(CIRO)新领域。源代码公开。
原文摘要 · Abstract (English)
The competition over natural reserves of minerals is expected to increase in part because of the linear-economy paradigm based on take-make-dispose. Simultaneously, the linear economy considers end-of-use products as waste rather than as a resource, which results in large volumes of waste whose management remains an unsolved problem. Since a transition to a circular economy can mitigate these open issues, in this paper we begin by enhancing the notion of circularity based on compartmental dynamical thermodynamics, namely, $λ$, and then, we model a thermodynamical material network processing a batch of 2 solid materials of criticality coefficients of 0.1 and 0.95, with a robotic disassembler compartment controlled via reinforcement learning (RL), and processing 2-7 kg of materials. Subsequently, we focused on the design of the robotic disassembler compartment using state-of-the-art RL algorithms and assessing the algorithm performance with respect to $λ$ (Fig. 1). The highest circularity is -2.1 achieved in the case of disassembling 2 parts of 1 kg each, whereas it reduces to -7.2 in the case of disassembling 4 parts of 1 kg each contained inside a chassis of 3 kg. Finally, a sensitivity analysis highlighted that the impact on $λ$ of the performance of an RL controller has a positive correlation with the quantity and the criticality of the materials to be disassembled. This work also gives the principles of the emerging research fields indicated as circular intelligence and robotics (CIRO). Source code is publicly available.
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