Full-palm tactile sensing, liquid cooling channels, and high dexterity aims to improve humanoid robot's bionic hands for long operations.
Xiaomi has unveiled a major redesign of its CyberOne humanoid robot , introducing a new full-palm tactile bionic hand. It combines high-density sensing, improved dexterity, and an unusual liquid cooling system inspired by human sweating.
The update was detailed through Xiaomi Technology’s official WeChat account, where the company outlined how the new hand design moves closer to human-scale manipulation and long-duration industrial operation.The redesigned hand is significantly smaller than the previous version, with Xiaomi reducing the hand’s volume by 60 percent to achieve a 1:1 human scale.The dimensions are based on a 1.73-meter human hand model, which the company says helps improve sim-to-real transfer when training robotic manipulation systems in simulation before deploying them in the real world.Higher dexterity and full-palm tactile sensingThe new bionic hand also introduces a major increase in dexterity. Xiaomi said the configuration increases active degrees of freedom by 83 percent, bringing the robot’s bionic hand closer to the human hand standard of roughly 22 to 27 degrees of freedom required for complex manipulation tasks.A key part of the redesign is full-palm tactile sensing. The sensing area reportedly covers around 8,200 square millimeters, allowing the robot to detect pressure and contact across the entire palm rather than just the fingertips.This is significant because many robotic hands rely primarily on vision systems and fingertip sensors. Full-palm tactile sensing allows the robot to continue manipulating objects even when cameras are obstructed or when precise force control is required, such as in assembly tasks.Xiaomi also reported durability improvements, with the hand surviving more than 150,000 grasping cycles, which is substantially higher than the roughly 10,000-cycle failure threshold commonly seen in tendon-driven robotic hands.Liquid cooling system for bionic hand inspired by sweatingOne of the most unusual features of the new CyberOne hand is its liquid cooling system, designed to address overheating in high-density motors used in dexterous robotic hands.According to Xiaomi, the hand’s compact motors can generate significant heat during continuous operation. To manage this, the company integrated 3D-printed metal liquid cooling channels inside the hand that function similarly to sweat glands.Thermal management is a major challenge in humanoid robotics, particularly for robotic hands, which must pack multiple motors, sensors, and transmission systems into a very small space. Overheating can reduce motor performance, shorten component lifespan, and limit continuous operation time.Industrial testing and open-source dataXiaomi also shared early industrial testing results for the new hand. In automotive assembly tests, CyberOne reportedly achieved a 90.2 percent success rate for nut-fastening tasks within a strict 76-second factory cycle over three hours of operation.To support broader research in robotic manipulation and embodied AI, Xiaomi said it used tactile gloves for direct data collection and has open-sourced the TacRefineNet framework along with 61 hours of raw tactile data.The company suggests that combining full-palm tactile sensing with active liquid cooling could help enable humanoid robots to operate continuously in industrial environments, where dexterity, reliability, and thermal stability are critical for deployment.
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