生成的世界モデルによるレーザー溶融池ダイナミクスの予測制御
Generative World Models Enable Predictive Control of Laser Melt Pool Dynamics
レーザー溶融池の動的挙動を予測する生成的世界モデルを構築し、微分可能なモデルを予測制御に用いて溶融池深さを調整するレーザースケジュールを最適化、さらに制御方策を蒸留して実機展開の可能性を示した。
詳しい要約
1. どんなもの?
2. 先行研究と比べてどこがすごい?
3. 技術・手法の肝は?
4. どうやって有効だと検証した?
5. 議論はある?
6. 次に読むべき論文は?
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著者: Yiyang Yan, Markus Bambach, Mohamadreza Afrasiabi
分類: cs.LG
原文アブストラクト
World models, which learn how environments respond to actions, are emerging as a powerful paradigm for planning through imagined futures, transforming decision-making across games, robotics and autonomous driving. Bringing this capability to manufacturing could enable process decisions on timescales inaccessible to high-fidelity simulation. Here we introduce a generative world model for localized highly dynamic laser melt pool that predicts evolution from histories of temperature and phase morphology under candidate actions. Its generative latent dynamics capture the effects of unresolved melt flow, enabling more accurate recursive rollouts than deterministic regressors under transient laser inputs. Because the learned dynamics are differentiable, the model can serve directly as a predictive control plant. Gradients through imagined futures optimize laser schedules that regulate melt-pool depth over previously unseen geometry, path, initialization. We further distil this optimization into an amortized policy that produces control actions in a single forward pass, providing a proof of concept for real deployment on machines.