Engineers in the United States have developed a method to control balance in a two-legged, remotely controlled robot, which may in the future carry out high-impact tasks in challenging environments.
The study published in the latest edition of Science Robotics described the robot resembling a machined torso and two legs and a human operator wearing a vest that transmits information about the human's motion and ground reaction forces to the robot.
The human operator can both direct the robot's locomotion and feel the robot's motions, thanks to the vest. For example, if the robot is starting to tip over, the human feels a corresponding pull on the vest and can adjust in a way to rebalance the robot synchronously.
"Now if you want to open a heavy door, the human can command the robot to throw its body at the door and push it open, without losing balance," said Joao Ramos, who developed the approach as a postdoc at Massachusetts Institute of Technology (MIT).
Ramos found that balance could be decided by a person's center of mass in relation to their center of pressure, a point on the ground where a force equivalent to all supporting forces is exerted.
The position of these two ingredients could be physically represented as an upside-down pendulum, with the top end representing a human's center of mass (usually in the torso) and the bottom representing their center of pressure on the ground, according to the study.
The researchers then developed a control algorithm based on the pendulum model, linking feedback between human and robot.
In the experiment, when the robot was struck with a hammer from various directions, Ramos wearing the vest could feel the jerk in the direction the robot moved and he instinctively resisted the tug, which the robot translated into a subtle shift in the center of mass in relation to center of pressure and in turn kept from tipping over.
The researchers are planning to develop a full-body humanoid with similar balance control, that one day is able to gallop through a disaster zone and rise up to push away barriers as part of rescue missions.
China's lunar rover Yutu-2 has driven 318.62 meters on the far side of the moon to conduct scientific exploration of the virgin territory.
Both the lander and the rover of the Chang'e-4 probe have ended their work for the 11th lunar day, and switched to dormant mode for the lunar night on Monday (Beijing time), according to the Lunar Exploration and Space Program Center of the China National Space Administration.
The rover is now located 218.11 meters northwest of the lander.
China's Chang'e-4 probe, launched on Dec. 8, 2018, made the first-ever soft landing on the Von Karman Crater in the South Pole-Aitken Basin on the far side of the moon on Jan. 3.
A lunar day equals 14 days on Earth, a lunar night the same length. The Chang'e-4 probe switches to dormant mode during the lunar night due to a lack of solar power.
During the 11th lunar day of the probe on the moon, the scientific instruments on the lander and rover worked well, and a new batch of scientific detection data was sent to the core research team for analysis.
Scientists are planning the future exploration route for the rover.
As a result of the tidal locking effect, the moon's revolution cycle is the same as its rotation cycle, and the same side always faces Earth.
The far side of the moon has unique features, and scientists expect Chang'e-4 could bring breakthrough findings.
The scientific tasks of the Chang'e-4 mission include conducting low-frequency radio astronomical observation, surveying the terrain and landforms, detecting the mineral composition and shallow lunar surface structure and measuring neutron radiation and neutral atoms.
The Chang'e-4 mission embodies China's hope to combine wisdom in space exploration with four payloads developed by the Netherlands, Germany, Sweden and Saudi Arabia.
China on Sunday launched a new Earth observation satellite, Gaofen-7, which will play an important role in land surveying and mapping, urban and rural construction and statistical investigation, according to the China National Space Administration (CNSA).
The Gaofen-7, launched on a Long March-4B rocket at 11:22 a.m. (Beijing Time) from the Taiyuan Satellite Launch Center in north China's Shanxi Province, is China's first civil-use optical transmission three-dimensional surveying and mapping satellite that reaches the sub-meter level, CNSA said.
The satellite and carrier rocket were developed by the China Academy of Space Technology (CAST) and the Shanghai Academy of Spaceflight Technology under the China Aerospace Science and Technology Corporation.
The users of the Gaofen-7 satellite will be mainly from the Ministry of Natural Resources, the Ministry of Housing and Urban-Rural Development and the National Bureau of Statistics.
Via the same carrier rocket, three other commercial and scientific experiment satellites including one developed for Sudan were also sent into space.
The development of the Gaofen-7 has achieved a breakthrough in sub-meter level 3D mapping camera technology, meeting the highest mapping accuracy requirement among the Gaofen series Earth observation satellites, CNSA said.
It can obtain high-resolution optical 3D observation data and high-precision laser altimetry data and can realize 1:10,000 scale satellite 3D mapping for civil use in China, according to CNSA.
Since the Gaofen project began in 2010, China has had an increasingly clearer view of the planet. Launched in April 2013, Gaofen-1 can cover the globe in just four days.
Gaofen-2, sent into space in August 2014, is accurate to 0.8 meters in full color and can collect multispectral images of objects greater than 3.2 meters in length.
Gaofen-4, launched in late 2015, is China's first geosynchronous orbit high-definition optical imaging satellite.
Gaofen-3, launched in August 2016, is China's first synthetic aperture radar-imaging satellite.
Gaofen-5, launched in May 2018, has the highest spectral resolution of China's remote sensing satellites.
Gaofen-6, launched in June 2018, has a similar function to that of Gaofen-1, but with better cameras, and its high-resolution images can cover a large area of the earth.
Dhaka, Nov 3 (UNB)- The winners of the third edition of Banglalink Ennovators, a digital ideation competition launched to inspire innovative youngsters to rethink, restart and recreate, was announced at its grand finale in Radisson Blu Dhaka Water Garden on Sunday.
The announcement was made by Dr Shirin Sharmin Chaudhury, Speaker of the Parliament, as the chief guest.
Mohibul Hassan Chowdhoury, MP, Deputy Minister, Ministry of Education graced the event as the Special Guest where Taimur Rahman, Acting CEO and Chief Corporate & Regulatory Affairs Officer of Banglalink, Monzula Morshed, Chief Human Resources and Administration Officer and other management members of the organisation were present.
Around 17,000 youngsters across the country participated in the competition.
The selection process had several steps to identify the most innovative minds. Following the selection process, the selected participants were given the opportunity to attend grooming sessions and learn from industry experts that helped them to enhance their skills.
The top 5 teams presented their digital ideas at the Grand Finale.
Team Silver Lining, the winning team, clinched the top spot presenting its digital idea on a real-time vehicle monitoring system. Team Last Minute and Team Three And A Half Men were announced as the first runner-up and the second runner-up respectively for their digital ideas on an integrated waste management system and a digital ecosystem for authenticating daily consumable products.
The winning team will be given an opportunity to visit Banglalink’s parent company Veon’s HQ in Amsterdam, and a direct entry to the “Assessment Center of the Strategic Assistant Program” of Banglalink. The first and the second runners-up will also get a direct entry to “Assessment Center of the Strategic Assistant Program” along with attractive prizes.
All the members of the top 5 teams will directly qualify for Banglalink’s “Advanced Internship Program (AIP)” and get opportunities to participate in Banglalink’s “Learn from Startups” and “Campus to Corporate Programs”.
As of Sunday, drivers in the Australian State of New South Wales (NSW) can use a Digital Driver's Licence (DDL) on their smartphone for proof of identity, proof of age and at roadside police stops.
NSW Premier Gladys Berejiklian and Minister for Customer Service Victor Dominello announced the statewide rollout as a result of successful trials in a number of areas including the eastern suburbs of NSW capital, Sydney.
"More than 550,000 people have already downloaded the digital licence, with 97 percent giving it the thumbs up," Berejiklian said.
"We've always put the customer at the heart of everything we do. The DDL is the latest way we are making life easier for the people of this state."
According to government representatives, the system is encoded with state of the art security controls to protect the identity and private information of users.
"The DDL is hosted securely on the new Service NSW app, locks with a PIN and can be accessed offline. It will provide additional levels of security and protection against identity fraud, compared to the plastic driver licence," Dominello said.
"We are working closely with business and industry to have them come on board and accept the DDL. This includes nightclubs, restaurants, hotels, petrol stations, supermarkets, convenience stores and tobacco retailers."