Squirrel-inspired one-legged robotic nimbly leaps between branches


I like me a bio-inspired robotic that pulls off difficult feats by taking cues from the pure world. College of California, Berkeley (UCB) researchers have now proven off the one-legged Salto bot mimic the way in which squirrels leap effortlessly between precarious branches and stick the touchdown on the very first try.

Since 2016, Salto has performed a giant position in serving to engineers at UCB work out methods to boost robotic mobility for specialised functions. The one-legged bot can bounce to a top of over three ft (over a meter) – thrice its personal top – and even ricochet off a wall.

For Salto’s newest trick, the hopping bot leapt onto a dangerous department and balanced with out toppling over.

Watch the little robotic do its factor within the clip under.

Berkeley researchers designed this robotic to leap like a squirrel

So how do you make a robotic land on a department with one foot? It begins with intensive analysis on how squirrels bounce. Some members of the UCB crew introduced a paper on this biomechanical evaluation, which appeared within the Journal of Experimental Biology final month.

Because it seems, when squirrels land on a department, they direct the power of touchdown by their shoulder joint, after which apply braking power with their legs to keep away from falling forwards or backwards.

A squirrel leaping from a perch to a branch instrumented to measure force (top); Salto the one-legged robot following suit with a flywheel and adjustable leg forces (bottom)
A squirrel leaping from a perch to a department instrumented to measure power (prime); Salto the one-legged robotic following go well with with a flywheel and adjustable leg forces (backside)

Sebastian Lee (prime) and Justin Yim (backside) / UC Berkeley

Subsequent, the researchers went to work enhancing Salto’s capabilities. The bot already had a motorized flywheel to assist it stability; including a solution to reverse the motor enabled Salto to brake when it landed on a department. The crew additionally added adjustable leg forces to assist it compensate for over- or under-shooting when it landed, along with the flywheel’s impact.

With that, Salto and different robots that use this tech may probably help in search-and-rescue operations by navigating nimbly by catastrophe areas, assist examine infrastructure, and even discover low-gravity celestial our bodies.

To that finish, Justin Yim, who co-authored the paper on leaping robots that appeared in Science Robotics, is growing a one-legged bot that might survey Enceladus, a moon of Saturn, the place a single leap may carry the little machine the size of a soccer discipline.

Supply: UC Berkeley