HANDOFF: Bridging AI Planning and Robot Control

Deploying humanoid robots in the real world hinges on an effective interface between task planning and whole-body control. Current systems often demand dense references that are difficult for planners to generate from semantic task descriptions. This paper introduces HANDOFF, a proposed solution that redefines the humanoid robot command space.

A Compact and Expressive Command Interface

HANDOFF presents a streamlined, explicit interface designed for intuitiveness, generality, modularity, and expressiveness across a wide array of manipulation skills. This novel approach directly addresses the limitations of existing controllers that struggle to synthesize complex kinematic or spatial references from task semantics, thereby simplifying the integration of high-level AI planning with low-level robot control. The researchers' work, detailed on arXiv, focuses on creating a more direct and efficient communication channel.

Distilled Control for Robust Performance

The HANDOFF controller is engineered through multi-teacher KL distillation, leveraging a context-conditioned gating scheme to create a mixture-of-experts student model. This student model synthesizes the strengths of three specialized teachers: whole-body motion tracking with safety-filtered data, locomotion, and fall recovery. This distillation process results in a single, unified controller that matches state-of-the-art velocity tracking and boasts one of the most extensive robust manipulation workspaces observed on the Unitree G1 platform.

Real-World Feasibility via Vision-Language Agents

Demonstrating practical application, HANDOFF has been successfully deployed on hardware for multiple natural-language-driven task roll-outs. This was achieved using a Vision-Language Model (VLM)-driven agentic planner. Crucially, these demonstrations required no task-specific data or fine-tuning of the controller itself, showcasing HANDOFF's adaptability and the potential for seamless integration with advanced AI planning systems in real-world robotic deployments.