Publications

You can also find my articles on my Google Scholar profile.

2026

FAITH: Feasibility-Aware Safety-Filtered RL for High-Dimensional Systems
Songyuan Zhang, Baljeet Singh, Sarthak Ranjeet Kaingade, Chuchu Fan, Bryan Trinh
arXiv preprint arXiv:2610.12432, 2026.
arXiv
Light push: initial humanoid pose beside the protected region Light push: humanoid during recovery beside the protected region Light push: humanoid recovers while staying clear of the protected region Strong push: initial humanoid pose beside the protected region Strong push: humanoid leaning away from the protected region during the fall Strong push: humanoid falls away from the protected region
LASER: Latent Space Adjoint Matching for Support-Constrained Entropy-Regularized Offline RL
Songyuan Zhang, Oswin So, Eric Yang Yu, Matthew Cleaveland, Peter Crowley-Dolen, Chuchu Fan
Conference on Neural Information Processing Systems (NeurIPS), 2026.
Website
LASER algorithm diagram showing the base and latent flows, behavior-cloning decoder, and action-space policy
Unified Overview of Safety Certificate Functions: Techniques from Hamilton–Jacobi Reachability and Control Barrier Functions
Hao Wang, Max Cohen, Zeyuan Feng, Donggeon David Oh*, Oswin So*, Songyuan Zhang*, Javier Borquez, Chuchu Fan, Jaime Fernández Fisac, Haimin Hu, Jason J. Choi, Somil Bansal
65th IEEE Conference on Decision and Control (CDC), 2026.
arXiv
Overview of safety-certificate methods organized by model access and system dimensionality
Safe and Scalable Multi-Drone Payload Transport via CBF-based Reinforcement Learning with Zero-Shot Sim-to-Real Transfer
Jaeyoun Choi, Oswin So, Songyuan Zhang, Cooper Taylor, Chuchu Fan
IEEE Robotics and Automation Letters (RA-L), 2026.
arXiv
Multi-drone payload transport teaser
Hamiltonian Grid-Forming: Methodology and Applications for IBR-Rich Grid Operations
Qing Shen, Peng Zhang, Songyuan Zhang, Chuchu Fan, Yifan Zhou, Yacov A. Shamash
IEEE Transactions on Industry Applications, 2026.
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Open-loop training diagram for Hamiltonian Grid-Forming
Beyond Waypoints: Semantic-Centric Autonomy with Unreliable Maps Through Learned Abstractions
Akila Saravanan, Songyuan Zhang, Travis Manderson, Nicholas Roy, Chuchu Fan
IEEE International Conference on Robotics and Automation (ICRA), 2026.
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ReFORM: Reflected Flows for On-support Offline RL via Noise Manipulation
Songyuan Zhang, Oswin So, H M Sabbir Ahmad, Eric Yang Yu, Matthew Cleaveland, Mitchell Black, Chuchu Fan
International Conference on Learning Representations (ICLR), 2026.
Website
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Solving Parameter-Robust Avoid Problems with Unknown Feasibility using Reinforcement Learning
Oswin So, Eric Yang Yu, Songyuan Zhang, Matthew Cleaveland, Mitchell Black, Chuchu Fan
International Conference on Learning Representations (ICLR), 2026.
Website
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2025

HMARL-CBF – Hierarchical Multi-Agent Reinforcement Learning with Control Barrier Functions for Safety-Critical Autonomous Systems
H. M. Sabbir Ahmad, Ehsan Sabouni, Alexander Wasilkoff, Param Budhraja, Zijian Guo, Songyuan Zhang, Chuchu Fan, Christos Cassandras, Wenchao Li
Conference on Neural Information Processing Systems (NeurIPS), 2025.
Website
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Solving Multi-Agent Safe Optimal Control with Distributed Epigraph Form MARL
Songyuan Zhang*, Oswin So*, Mitchell Black, Zachary Serlin, Chuchu Fan
Proceedings of Robotics: Science and Systems (RSS), 2025. [Best Student Paper Award]
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Discrete GCBF Proximal Policy Optimization for Multi-agent Safe Optimal Control
Songyuan Zhang, Oswin So, Mitchell Black, Chuchu Fan
International Conference on Learning Representations (ICLR), 2025.
Website
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GCBF+: A Neural Graph Control Barrier Function Framework for Distributed Safe Multi-Agent Control
Songyuan Zhang*, Oswin So*, Kunal Garg, Chuchu Fan
IEEE Transactions on Robotics, 2025.
Website
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2024

Learning to Stabilize High-dimensional Unknown Systems Using Lyapunov-guided Exploration
Songyuan Zhang, Chuchu Fan
6th Annual Learning for Dynamics & Control Conference (L4DC), 2024.
Website
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Learning Safe Control for Multi-Robot Systems: Methods, Verification, and Open Challenges
Kunal Garg, Songyuan Zhang, Oswin So, Charles Dawson, Chuchu Fan
Annual Reviews in Control (ARC), vol. 57, p. 100948, 2024.
arXiv
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Foundation Models to the Rescue: Deadlock Resolution in Connected Multi-Robot Systems
Kunal Garg, Songyuan Zhang, Jacob Arkin, Chuchu Fan
arXiv preprint arXiv:2404.06413
arXiv
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2023

Neural Graph Control Barrier Functions Guided Distributed Collision-avoidance Multi-agent Control
Songyuan Zhang, Kunal Garg, Chuchu Fan
7th Conference on Robot Learning (CoRL), 2023.
Website
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Physics-Informed, Safety and Stability Certified Neural Control for Uncertain Networked Microgrids
Lizhi Wang, Songyuan Zhang, Yifan Zhou, Chuchu Fan, Peng Zhang, Yacov A. Shamash
IEEE Transactions on Smart Grid, 2023.
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Learning-Based, Safety and Stability-Certified Microgrid Control
Lizhi Wang, Songyuan Zhang, Yifan Zhou, Chuchu Fan, Peng Zhang, Yacov A. Shamash
2023 IEEE Power & Energy Society General Meeting (PESGM), 2023.
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Compositional Neural Certificates for Networked Dynamical Systems
Songyuan Zhang, Yumeng Xiu, Guannan Qu, Chuchu Fan
5th Annual Learning for Dynamics & Control Conference (L4DC), 2023. [Oral]
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2021

Confidence-Aware Imitation Learning from Demonstrations with Varying Optimality
Songyuan Zhang*, Zhangjie Cao*, Dorsa Sadigh, Yanan Sui
Conference on Neural Information Processing Systems (NeurIPS), 2021.
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