Lynx robot from Switzerland.

Swiss engineers presented the four-legged robotic trot, Dyana, which differs noticeably from most robotic dog projects. Dyana has an animated face with a realistic shape, a movable tail, and more complex and realistic hind legs. The authors spoke about the design and capabilities of the new robot on their YouTube channel.

Research in the field of walking and especially four-legged robots has been going on for more than a decade, especially in recent years. To date, some of the robots have already gone beyond the laboratories and are on sale. But almost all of them are structured very similarly: they have four two-piece legs, powered by electric motors, and sensors in the front of the torso. Of course, there are exceptions among them, such as the hydraulic HyQ or Tencent’s walking-wheeled robot, but these are quite rare. It is noteworthy that the developers of four-legged robots often make references to animals, usually dogs, in the name or description, but do not endow them with the characteristic features and anatomical features of these creatures.

Developers from the Swiss Higher Technical School of Zurich have been developing a realistic four-legged robot animatronic Dyana since 2020 and finally embodied it not in the form of renders, but in hardware. The most noticeable difference between Dyana and other four-legged robots is its appearance: the robot is made in the form of a lynx with a head, tail and overhead panels on the legs and torso, increasing realism. The head can be tilted in different directions, and in addition, it has movable ears and animated eyes made in the form of screens. Eyes realistically change direction of gaze and periodically blink.

The main structural difference between Dyana and Spot and other four-legged robots lies in the hind legs – they consist of three, rather than two, segments. The upper and lower segments are mechanically connected to each other so that during movement they are always at the same angle to each other. All segments are driven by servos at the base of the legs.

The current developers only showed how the robot moves its legs, being fixed on a pedestal, but did not demonstrate real walking. According to calculations, the robot’s battery lasts for about half an hour of walking.

Link: https://jobtorob.com/lynx-robot/

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