The Road to Cybathlon

This week, the world’s first Cybathlon will take place in Zurich. One of the Swiss teams will take part with Varileg. VariLeg is a project that comes out of ETH Zurich, and is supervised by NCCR Robotics member Stefan Schrade (Gassert Lab, RELab). The VariLeg is an experimental prototype of a new type of exoskeleton: the VariLeg uses actuated joints in two locations (hip and knee). The novelty of the device is a variable stiffness actuator in the knee providing variable impedance control. When a person without a disability takes a step, their knee automatically softens and stiffens as required, making small adjustments with muscles in the trunk and legs to compensate for unevenness in the ground and allowing for natural walking.

Source: NCCR / Varileg

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