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Learning Switching Port-Hamiltonian Systems with Uncertainty Quantification

Beckers, Thomas, Jiahao, Tom Z., Pappas, George J.

arXiv.org Artificial Intelligence

Switching physical systems are ubiquitous in modern control applications, for instance, locomotion behavior of robots and animals, power converters with switches and diodes. The dynamics and switching conditions are often hard to obtain or even inaccessible in case of a-priori unknown environments and nonlinear components. Black-box neural networks can learn to approximately represent switching dynamics, but typically require a large amount of data, neglect the underlying axioms of physics, and lack of uncertainty quantification. We propose a Gaussian process based learning approach enhanced by switching Port-Hamiltonian systems (GP-SPHS) to learn physical plausible system dynamics and identify the switching condition. The Bayesian nature of Gaussian processes uses collected data to form a distribution over all possible switching policies and dynamics that allows for uncertainty quantification. Furthermore, the proposed approach preserves the compositional nature of Port-Hamiltonian systems. A simulation with a hopping robot validates the effectiveness of the proposed approach.


Google's Alphabet is trying to build robots smart enough to share our homes and offices ZDNet

#artificialintelligence

Google's Alphabet is adding yet another chapter to its rollercoaster history of robotics projects. The company's R&D lab, dubbed Alphabet X, is working on a new breed of robots that can learn new tasks, rather than be programmed into performing them. The initiative is called the "Everyday Robot Project" because, as its name implies, it wants to build robots that can assist humans in simple tasks of everyday life. More importantly, the machines could do so even when confronted with our messy, unpredictable environments. The leader of the project, Hans Peter Brondmo, explained that robots currently operate in environments specifically designed and structured for them.


GITAI Partners With JAXA to Send Telepresence Robots to Space

IEEE Spectrum Robotics

GITAI is a robotics startup with offices in Japan and the United States that's developing tech to put humanoid telepresence robots in space to take over for astronauts. Today, GITAI is announcing a joint research agreement with JAXA (the Japanese Aerospace Exploration Agency) to see what it takes for robots to be useful in orbit, with the goal of substantially reducing the amount of money spent sending food and air up to those demanding humans on the International Space Station. It's also worth noting that GITAI has some new hires, including folks from the famous (and somewhat mysterious) Japanese bipedal robot company SCHAFT. A quick reminder about SCHAFT: The company was founded by members of the JSK Laboratory at the University of Tokyo in order to build a robot to compete in the DARPA Robotics Challenge Trials in 2013. SCHAFT won the DRC Trials by a substantial margin, scoring 27 points out of a possible 32, 7 more points than the second place team (IHMC).


Google's AI Vision May No Longer Include Giant Robots

#artificialintelligence

Good news for the deeply paranoid among us: If the apocalypse arrives via giant anthropomorphic robots, they probably won't be bankrolled by Google. On Thursday, Google's parent company, Alphabet, announced that it was selling Boston Dynamics, its premier robotics division, to the Japanese telco giant SoftBank for an undisclosed sum. The deal also includes a smaller robotics company called Schaft. Boston Dynamics was less a moonshot than a sci-fi horror brought to life. Even before being acquired by Google in 2013, the 25-year-old company had already developed a Beast Wars–style squadron of robot predators with names like BigDog and WildCat, as well as a humanoid model called Atlas.


Finally! Google sells Boston Dynamics to SoftBank

Robohub

In a long-awaited transaction, The New York Times Dealbook announced that SoftBank was buying Boston Dynamics from Alphabet (Google). Also included in the deal is the Japanese startup Schaft. Acquisition details were not disclosed. Both Boston Dynamics and Schaft were acquired by Google when Andy Rubin was developing Google's robot group through a series of acquisitions. Both companies have continued to develop innovative mobile robots.


SoftBank-unit-buy-Boston-Dynamics-Alphabet-Inc.html?ITO=1490&ns_mchannel=rss&ns_campaign=1490

Daily Mail

Boston Dynamics makes a variety of robots, including machines that mimic humans and animals, but has struggled to find a market for them. Boston Dynamics makes a variety of robots, including machines that mimic humans and animals, but has struggled to find a market for them. Boston Dynamics products also include Big Dog's little brother Spot, a complex machine that can walk and trot on four legs like a dog. Their companion robot Pepper, hit the headlines last year, after the Japanese robot refused to share whether it held a desire to rule the world.


SoftBank gains cutting-edge robotics with Boston Dynamics acquisition

The Japan Times

SoftBank Group is taking over Google parent Alphabet's robot dreams, buying Boston Dynamics to pursue a future when more machines intermingle with humans. As part of the transaction with Alphabet, SoftBank also agreed to buy Japanese bipedal robotics company Schaft. Terms of the deal weren't disclosed. Boston Dynamics, bought by Google in 2013 as part of a robotics acquisitions spree, made its name with a series of two- and four-legged machines that are able to stay upright even when pushed or traversing rocky terrain. Videos of the robots, known for their animal-like movements, are popular on YouTube.


Google's robot army in action

AITopics Original Links

Boston Dynamics The desire to make robots seem gentle and appealing is not foremost among Boston Dynamics' priorities. Its thuggish looking creations, usually inspired by an animal, have largely been developed for the US military, for purposes which are delicately described as "search and rescue" tasks. Boston Dynamics has also developed a humanoid prototype called Atlas, which is able to, in the company's words, "lift, carry and manipulate the environment" Schaft If Meka is providing the foundations for the top half of Google's robot, Schaft may offer the bottom. The Japanese designed robot, which stays balanced even when jostled, trounced its rivals at a recent robotics competition held by the US department of defence. Redwood Robotics Comprising of the amalgamated expertise of three major developers, including Meka, focused on the elusive goal of developing a fully functioning robotic arm.


Killer Robots: If No One Pulls the Trigger, Who's to Blame?

AITopics Original Links

On Saturday at a NASCAR track in Florida, a humanoid robot named SCHAFT, created by a team of engineers from the University of Tokyo, performed a series of emergency tasks including using a hose, drilling a hole into a wall, walking through doors and driving a golf cart. SCHAFT ran away from the competition, with only a robot from DOD-funded Boston Dynamics staying close. These two robots, along with six others from private companies and university labs around the world, performed these tasks under the watchful eye of DARPA, the secretive defense research branch of the U.S. military. DARPA said the purpose of the competition was to begin modeling a robot that could be used on the surface of Mars. But many suspected that DARPA sponsors the competition to advance the use of robots like those on the battlefield.


Why Is Google Building A Robot Army?

AITopics Original Links

Looking back, Google's emergence as a robotics powerhouse seems obvious--and inevitable. First came the scattered hires of roboticists and the release of self-driving cars into Bay Area traffic. Then, the search giant reportedly bought two humanoid HUBO robots from South Korean university KAIST. But it wasn't until December's revelation that Google had acquired eight robotics companies--including Boston Dynamics, maker of BigDog, WildCat and a stable of other astonishing Pentagon-funded bots--that it became clear: Google means to build robots. Although the prospect of merging Google's insatiable appetite for data with sprinting, leaping hardware has inspired an unsurprising battery of Skynet jokes, the response among roboticists has been overwhelmingly positive.