Learning Pivoting Manipulation with Force and Vision Feedback Using Optimization-based Demonstrations

• URL: http://arxiv.org/abs/2508.01082v2
• Date: Tue, 05 Aug 2025 23:03:27 GMT
• Title: Learning Pivoting Manipulation with Force and Vision Feedback Using Optimization-based Demonstrations
• Authors: Yuki Shirai, Kei Ota, Devesh K. Jha, Diego Romeres,
• Abstract summary: We propose a framework for learning closed-loop pivoting manipulation.<n>By leveraging computationally efficient Contact-Implicit Trajectory Optimization, we design demonstration-guided deep Reinforcement Learning.<n>We also present a sim-to-real transfer approach using a privileged training strategy, enabling the robot to perform pivoting manipulation.
• Score: 20.20969802675097
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Non-prehensile manipulation is challenging due to complex contact interactions between objects, the environment, and robots. Model-based approaches can efficiently generate complex trajectories of robots and objects under contact constraints. However, they tend to be sensitive to model inaccuracies and require access to privileged information (e.g., object mass, size, pose), making them less suitable for novel objects. In contrast, learning-based approaches are typically more robust to modeling errors but require large amounts of data. In this paper, we bridge these two approaches to propose a framework for learning closed-loop pivoting manipulation. By leveraging computationally efficient Contact-Implicit Trajectory Optimization (CITO), we design demonstration-guided deep Reinforcement Learning (RL), leading to sample-efficient learning. We also present a sim-to-real transfer approach using a privileged training strategy, enabling the robot to perform pivoting manipulation using only proprioception, vision, and force sensing without access to privileged information. Our method is evaluated on several pivoting tasks, demonstrating that it can successfully perform sim-to-real transfer. The overview of our method and the hardware experiments are shown at https://youtu.be/akjGDgfwLbM?si=QVw6ExoPy2VsU2g6

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