Publications

2026

  1. Grounded Vision-Language Interpreter for Integrated Task and Motion Planning
    Cristian C. Beltran-Hernandez, Jeremy Siburian, Keisuke Shirai, Masashi Hamaya, Michael Görner, and 1 more author
    2026
  2. PHASE: Compliance-Enabled Tactile Phase Retrieval for Few-Shot Insertion Learning
    Jeremy Siburian, Cristian C. Beltran-Hernandez, Tatsuya Matsushima, Yusuke Iwasawa, Masashi Hamaya, and 1 more author
    2026
  3. A Flexible Wrist With Anisotropic and Selectable Stiffness for Robust Contact-Rich Manipulation
    Steven Oh, Tomoya Takahashi, Cristian C. Beltran-Hernandez, Yuki Kuroda, and Masashi Hamaya
    IEEE Robotics and Automation Letters, Aug 2026
  4. Tactile Memory with Soft Robot: Robust Object Insertion via Masked Encoding and Soft Wrist
    Tatsuya Kamijo, Mai Nishimura, Nodoka Shibasaki, Jeremy Siburian, Cristian C. Beltran-Hernandez, and 1 more author
    IEEE Robotics and Automation Letters, 2026
  5. A Flexible Funnel-Shaped Robotic Hand with an Integrated Single-Sheet Valve for Milligram-Scale Powder Handling
    Tomoya Takahashi, Yusaku Nakajima, Cristian C. Beltran-Hernandez, Yuki Kuroda, Kazutoshi Tanaka, and 3 more authors
    In IEEE International Conference on Robotics and Automation (ICRA), 2026
  6. Simulation-Driven Evolutionary Motion Parameterization for Contact-Rich Granular Scooping with a Soft Conical Robotic Hand
    Yongliang Wang, Cristian C. Beltran-Hernandez, Tomoya Takahashi, and Masashi Hamaya
    In IEEE International Conference on Robotics and Automation (ICRA), 2026
  7. Robust and Resilient Soft Robotic Object Insertion with Compliance-Enabled Contact Formation and Failure Recovery
    Mimo Shirasaka, Cristian C. Beltran-Hernandez, Masashi Hamaya, and Yoshitaka Ushiku
    In IEEE International Conference on Robotics and Automation (ICRA), 2026
  8. SII
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    Stable In-Hand Manipulation for a Lightweight Four-Motor Prosthetic Hand
    Yuki Kuroda, Tomoya Takahashi, Cristian C. Beltran-Hernandez, Masashi Hamaya, and Kazutoshi Tanaka
    In , 2026
  9. SII
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    Learning Diffusion Policies from Demonstrations For Compliant Contact-rich Manipulation
    Cristian C. Beltran-Hernandez, Malek Aburub, Tatsuya Kamijo, and Masashi Hamaya
    In , 2026
  10. Refinement of Accelerated Demonstrations via Incremental Iterative Reference Learning Control for Fast Contact-Rich Imitation Learning
    Koki Yamane, Cristian C. Beltran-Hernandez, Steven Oh, Masashi Hamaya, and Sho Sakaino
    arXiv preprint arXiv:2604.16850, 2026

2025

  1. Under Review
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    Learning-based Cooperative Robotic Paper Wrapping: A Unified Control Policy with Residual Force Control
    Rewida Ali, Cristian C Beltran-Hernandez, Weiwei Wan, and Kensuke Harada
    2025
  2. KeyMPs: One-Shot Vision-Language Guided Motion Generation by Sequencing DMPs for Occlusion-Rich Tasks
    Edgar Anarossi, Yuhwan Kwon, Hirotaka Tahara, Shohei Tanaka, Keisuke Shirai, and 4 more authors
    2025
  3. PLEXUS Hand: Lightweight Four-Motor Prosthetic Hand Enabling Precision-Lateral Dexterous Manipulation
    Yuki Kuroda, Tomoya Takahashi, Cristian C. Beltran-Hernandez, Masashi Hamaya, and Kazutoshi Tanaka
    In IEEE-RAS-EMBS International Conference on Rehabilitation Robotics (ICORR), 2025
  4. SCU-Hand: Soft Conical Universal Robotic Hand for Scooping Granular Media from Containers of Various Sizes
    Tomoya Takahashi, Cristian C. Beltran-Hernandez, Yuki Kuroda, Kazutoshi Tanaka, Masashi Hamaya, and 1 more author
    In IEEE International Conference on Robotics and Automation (ICRA), 2025
  5. SII
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    Practical Task and Motion Planning for Robotic Food Preparation
    Cristian C. Beltran-Hernandez, Jeremy Siburian, and Masashi Hamaya
    In IEEE/SICE International Symposium on System Integrations, 2025

2024

  1. Learning Variable Compliance Control From a Few Demonstrations for Bimanual Robot with Haptic Feedback Teleoperation System
    Cristian C. Beltran-Hernandez, Tatsuya Kamijo, and Masashi Hamaya
    In IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS), 2024
  2. Robotic Object Insertion with a Soft Wrist through Sim-to-Real Privileged Training
    Yuni Fuchioka, Cristian C. Beltran-Hernandez, Nguyen Hai, and Masashi Hamaya
    In IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS), 2024
  3. Low-cost air hockey robot using a five-bar linkage mechanism driven by position-control servomotors
    Mirai Shinjo, Cristian C. Beltran-Hernandez, Masashi Hamaya, and Kazutoshi Tanaka
    In IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS), 2024
  4. Integrated Task and Motion Planning for Real-World Cooking Tasks
    Cristian C. Beltran-Hernandez, Jeremy Siburian, and Masashi Hamaya
    In ICRA Workshop on Cooking Robotics: Perception and Motion Planning, 2024
  5. SliceIt! - A Dual Simulator Framework for Learning Robot Food Slicing
    Cristian C. Beltran-Hernandez, Nicolas Erbetti, and Masashi Hamaya
    In IEEE International Conference on Robotics and Automation (ICRA), 2024
  6. Symmetry-aware Reinforcement Learning for Robotic Assembly under Partial Observability with a Soft Wrist
    Hai Nguyen, Tadashi Kozuno, Cristian C. Beltran-Hernandez, and Masashi Hamaya
    In IEEE International Conference on Robotics and Automation (ICRA), 2024
  7. Vision-Language Interpreter for Robot Task Planning
    Keisuke Shirai, Cristian C. Beltran-Hernandez, Masashi Hamaya, Atsushi Hashimoto, Shohei Tanaka, and 4 more authors
    In IEEE International Conference on Robotics and Automation (ICRA), 2024

2023

  1. Learning Robotic Assembly by Leveraging Physical Softness and Tactile Sensing
    Joaquín Royo-Miquel, Masashi Hamaya, Cristian C. Beltran-Hernandez, and Kazutoshi Tanaka
    In IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS), 2023

2022

  1. Team O2AC at the World Robot Summit 2020: Towards Jigless, High-Precision Assembly
    Felix Drigalski, Cristian C. Beltran-Hernandez, Chisato Nakashima, Zhengtao Hu, Shuichi Akizuki, and 6 more authors
    Advanced Robotics, 2022
  2. Uncertainty-Aware Manipulation Planning Using Gravity and Environment Geometry
    Felix Drigalski, Kazumi Kasaura, Cristian C. Beltran-Hernandez, Masashi Hamaya, Kazutoshi Tanaka, and 1 more author
    IEEE Robotics and Automation Letters, 2022
  3. Accelerating Robot Learning of Contact-Rich Manipulations: A Curriculum Learning Study
    Cristian C Beltran-Hernandez, Damien Petit, Ixchel G Ramirez-Alpizar, and Kensuke Harada
    2022
  4. RSJ
    Curriculum Reinforcement Learning for Industrial Insertion Tasks
    Cristian Beltran, Damien Petit, Ixchel Ramirez-Alpizar, and Kensuke Harada
    In 第40回日本ロボット学会学術講演会 RSJ2022, 2022

2021

  1. An Adaptive Imitation Learning Framework for Robotic Complex Contact-Rich Insertion Tasks
    Yan Wang, Cristian C Beltran-Hernandez, Weiwei Wan, and Kensuke Harada
    Frontiers in Robotics and AI, 2021
  2. Hybrid Trajectory and Force Learning of Complex Assembly Tasks: A Combined Learning Framework
    Yan Wang, Cristian C. Beltran-Hernandez, Weiwei Wan, and Kensuke Harada
    IEEE Access, 2021
  3. Robotic Imitation of Human Assembly Skills Using Hybrid Trajectory and Force Learning
    Yan Wang, Cristian C. Beltran-Hernandez, Weiwei Wan, and Kensuke Harada
    In IEEE International Conference on Robotics and Automation (ICRA), 2021
  4. Advancing Automated Assembly – Team O2AC at the World Robot Summit 2020
    Felix Drigalski, Chisato Nakashima, Kazumi Kasaura, and Cristian C. Beltran-Hernandez
    OMRON TECHNICS, 2021
  5. RSJ
    複雑なロボットアセンブリタスクのための適応型LfDフレームワーク
    Yan Wang, Cristian C. Beltran-Hernandez, Weiwei Wan, and Kensuke Harada
    In 第39回日本ロボット学会学術講演会 RSJ2021, 2021

2020

  1. Variable compliance control for robotic peg-in-hole assembly: A deep-reinforcement-learning approach
    Cristian C Beltran-Hernandez, Damien Petit, Ixchel G Ramirez-Alpizar, and Kensuke Harada
    Applied Sciences, 2020
  2. Learning Force Control for Contact-rich Manipulation Tasks with Rigid Position-controlled Robots
    Cristian Camilo Beltran-Hernandez, Damien Petit, Ixchel Georgina Ramirez-Alpizar, Takayuki Nishi, Shinichi Kikuchi, and 2 more authors
    IEEE Robotics and Automation Letters, 2020
  3. RSJ
    組合せ学習によって力制御を行うロボット組立技術の完成
    Yan Wang, Cristian C. Beltran-Hernandez, Weiwei Wan, and Kensuke Harada
    In 第38回日本ロボット学会学術講演会 RSJ2020, 2020
  4. SI
    不確実な目標を持ったロボットペグインホールの学習
    Cristian Beltran, Damien Petit, Ixchel Ramirez-Alpizar, and Kensuke Harada
    In 第21回計測自動制御学会システムインテグレーション部門講演会 SI2020, 2020

2019

  1. SI
    強化学習によるハイブリッド位置力制御
    Cristian Beltran, Damien Petit, Ixchel Ramirez-Alpizar, Takamitsu Matsubara, and Kensuke Harada
    In 第20回計測自動制御学会システムインテグレーション部門講演会 SI2019, 2019
    優秀講演賞 / Best Oral Presentation Award
  2. RSJ
    Reinforcement Learning Framework for Real-world Robotic Arm
    Cristian Beltran, Damien Petit, Takamitsu Matsubara, Ixchel Ramirez-Alpizar, and Kensuke Harada
    In 第37回日本ロボット学会学術講演会 RSJ2019, 2019
  3. SII
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    Learning to Grasp with Primitive Shaped Object Policies
    Cristian C Beltran-Hernandez, Damien Petit, Ixchel G Ramirez-Alpizar, and Kensuke Harada
    In IEEE/SICE International Symposium on System Integration (SII), 2019

2018

  1. RSJ
    Learning to grasp with guided policy search
    Cristian Beltran, Damien Petit, Takamitsu Matsubara, Ixchel Ramirez-Alpizar, and Kensuke Harada
    In 第36回日本ロボット学会学術講演会 RSJ2018, 2018
  2. Industry 4.0, Intelligent Visual Assisted Picking Approach
    Mario Arbulu, Paola Mateus, Manuel Wagner, Cristian Beltran, and Kensuke Harada
    In International Conference on Mining Intelligence and Knowledge Exploration, 2018