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Yufei Jia

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IROS Conference 2025 Conference Paper

DISCOVERSE: Efficient Robot Simulation in Complex High-Fidelity Environments

  • Yufei Jia
  • Guangyu Wang
  • Yuhang Dong
  • Junzhe Wu
  • Yupei Zeng
  • Haonan Lin
  • Zifan Wang
  • Haizhou Ge

We present Discoverse, the first unified, modular, open-source 3DGS-based simulation framework for Real2Sim2Real robot learning. It features a holistic Real2Sim pipeline that synthesizes hyper-realistic geometry and appearance of complex real-world scenarios, paving the way for analyzing and bridging the Sim2Real gap. Powered by Gaussian Splatting and MuJoCo, Discoverse enables massively parallel simulation of multiple sensor modalities and accurate physics, with inclusive supports for existing 3D assets, robot models, and ROS plugins, empowering large-scale robot learning and complex robotic benchmarks. Through extensive experiments on imitation learning, Dis coverse demonstrates state-of-the-art zero-shot Sim2Real transfer performance compared to existing simulators. For code and demos: https://air-discoverse.github.io/.

IROS Conference 2024 Conference Paper

Arm-Constrained Curriculum Learning for Loco-Manipulation of a Wheel-Legged Robot

  • Zifan Wang
  • Yufei Jia
  • Lu Shi
  • Haoyu Wang
  • Haizhou Zhao
  • Xueyang Li
  • Jinni Zhou
  • Jun Ma 0008

Incorporating a robotic manipulator into a wheellegged robot enhances its agility and expands its potential for practical applications. However, the presence of potential instability and uncertainties presents additional challenges for control objectives. In this paper, we introduce an arm-constrained curriculum learning architecture to tackle the issues introduced by adding the manipulator. Firstly, we develop an arm-constrained reinforcement learning algorithm to ensure safety and reliability in control performance after equipping the manipulator. Additionally, to address discrepancies in reward settings between the arm and the base, we propose a reward-aware curriculum learning method. The policy is first trained in Isaac gym and transferred to the physical robot to complete grasping tasks, including the door-opening task, fan-twitching task and the relay-baton-picking and following task. The results demonstrate that our proposed approach effectively controls the arm-equipped wheel-legged robot to master grasping abilities including the dynamic grasping skills, allowing it to chase and catch a moving object while in motion. Please refer to our website (https://acodedog.github.io/wheel-legged-loco-manipulation/) for the code and supplemental videos.

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