🤖 AI Summary
This work addresses the challenge of enabling humanoid robots to perform high-dynamic, human-like yet functionally effective badminton strokes, which demands explosive whole-body coordination and temporally precise interception. The authors propose an Imitation-to-Interaction framework that progressively transforms motion imitation into functional striking capability through reinforcement learning, integrating human motion priors, compact state representations, and a dynamics-aware stability mechanism. A key innovation is the manifold expansion strategy, which generalizes a continuous interaction volume from sparse human demonstrations, unifying motion naturalness with physical feasibility. This approach achieves, for the first time, zero-shot sim-to-real transfer of humanoid badminton skills, successfully reproducing complex shots—such as clears and net drops—on a real robot platform with both dynamic elegance and functional accuracy.
📝 Abstract
Realizing versatile and human-like performance in high-demand sports like badminton remains a formidable challenge for humanoid robotics. Unlike standard locomotion or static manipulation, this task demands a seamless integration of explosive whole-body coordination and precise, timing-critical interception. While recent advances have achieved lifelike motion mimicry, bridging the gap between kinematic imitation and functional, physics-aware striking without compromising stylistic naturalness is non-trivial. To address this, we propose Imitation-to-Interaction, a progressive reinforcement learning framework designed to evolve a robot from a"mimic"to a capable"striker."Our approach establishes a robust motor prior from human data, distills it into a compact, model-based state representation, and stabilizes dynamics via adversarial priors. Crucially, to overcome the sparsity of expert demonstrations, we introduce a manifold expansion strategy that generalizes discrete strike points into a dense interaction volume. We validate our framework through the mastery of diverse skills, including lifts and drop shots, in simulation. Furthermore, we demonstrate the first zero-shot sim-to-real transfer of anthropomorphic badminton skills to a humanoid robot, successfully replicating the kinetic elegance and functional precision of human athletes in the physical world.