Collaboration between NAVER LABS and Korea University of Technology & Education

AMBIDEX cable-driven robot learns to mimic human physical intelligence

Engineers from NAVER LABS have developed the AMBIDEX cable-driven robot, a machine capable of precise movements, instructed to learn and mimic the physical intelligence a human possesses. The robot can memorize actions and perform them autonomously (like peeling a vegetable or catching a ball.)

Developed by NAVER LABS, with Korea University of Technology & Education (KOREATECH), the robot arm now features an added waist, extending the available workspace, as well as a sensor head that can perceive objects. It has also been equipped with a robot hand “BLT Gripper” that can change to various grasping methods.

The robot arms move thanks to cables inside the body that act like tendons. Their state and position are monitored by a neural network algorithm, which, based on the motors’ position and the operator’s commands, calculates the dynamics of the movement of the cables, taking into account their elasticity.

The device features a 1:1 size ratio with actual humans, 7 degrees of freedom (per arm), just like a human arm, and bilateral teleoperation, which delivers force both ways between the human and the robot. The engineers could obtain detailed force control data from a human demo with this device and use it as a learning reference for the robot. Training the robot using various methods such as reinforcement learning via the haptic device is so efficient that the robot can successfully perform a task independently from a single demo.


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