Summary
A critical review of ISO/TS 15066 — the primary safety standard for physical human-robot interaction in manufacturing. The authors question foundational assumptions in the standard, show that common design approximations cause unquantified performance losses, and argue that energy (not just force/pressure) should be the fundamental unit of safety assessment.
對物理人機互動製造業安全標準 ISO/TS 15066 的批判性回顧。作者質疑標準的基本假設，顯示常見設計近似導致未被量化的性能損失，並主張能量（而非僅力/壓力）應是安全評估的基本單位。
Key Points
- ISO/TS 15066 defines 4 collaborative operation modes; Power and Force Limiting (PFL) governs direct physical contact
- Standards give quantitative force/pressure limits — but the paper argues these are derived from poorly validated assumptions
- Energy is the correct fundamental quantity for safety assessment, not instantaneous force
- 2025 ISO 10218-2 revision: collaborative designation now belongs to the application, not the robot hardware itself
- Over-conservative safety constraints reduce productivity; under-conservative ones create injury risk — both are costly
Insights
- The critique of ISO/TS 15066 is methodologically important: safety standards in robotics are often adopted without rigorous empirical validation of their underlying biomechanical models
- The energy-centric view aligns with control theory: what matters for injury is energy transfer, which depends on velocity, mass, and contact geometry — not just peak force
- This connects to the broader HRI challenge: physical safety standards were designed for industrial cobots, but dexterous robots (like GR-Dexter’s 21-DOF hands) operate in much closer proximity with more complex contact geometries
- “The application, not the robot, is collaborative” is a regulatory mindset shift that has practical implications: you can’t certify a robot as safe in isolation; safety must be assessed in the deployment context
Connections
- GR-Dexter: VLA for Bimanual Dexterous Robot Control
- Robotics
- Human-Robot Interaction
- Manufacturing
- Control Systems
Raw Excerpt
The paper emphasizes the fundamental role of energy in safety assessment and critically investigates how commonly accepted safety constraints are derived, questioning their foundational assumptions and real-world applicability.