bahadur999
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CH-91?
Chinese UAV News & Discussions (Strictly)
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lcloo
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Harpy aka JWS01. Export Version ASN-301.
bahadur999
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Thanks! I guess it is the one being developed at Aisheng Technology Co., Ltd.
It seems like PLAAF's rather than PLAGF's
bahadur999
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Hard to understand. Is it the Phantom-6?
JSCh
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Efficiency boost for robot submarines
March 8, 2019 by David Bradley, Inderscience
Credit: CC0 Public Domain
Researchers in China have designed an improved energy-aware and self-adaptive deployment method for autonomous underwater vehicles. The team of Chunlai Peng and Tao Wang of the Guangdong University of Technology, in Guangzhou, provide details in the International Journal of Modelling, Identification and Control.
The researchers explain that autonomous underwater vehicles (AUVs) are essential mobile robots that can travel underwater and perform tasks that are considered to hazardous for people to carry out for various reasons. There are, however, problems that face the operators of AUVs, specifically the fact that control algorithms are not necessarily optimized for distance nor energy consumption.
The team's approach to enabling energy awareness, as well as self-adaptive deployment, has now been tested with ten AUVs. Their work demonstrates that they can reduce energy consumption with their algorithm in the test AUVs by almost a third. This could be a real boon for marine environment monitoring, military missions, search missions after the loss of a craft at sea, and perhaps even after a tsunami, earthquake or other geological catastrophes.
The team concludes their paper with a nod to the future direction of their research. "Future work will study an energy-supplying problem during the ocean rescue that generating trajectories for AUVs to rendezvous with energy-carrying robots, such as mobile charging stations, i.e., a rendezvous problem for AUVs and mobile charging stations," they explain.
https://phys.org/news/2019-03-efficiency-boost-robot-submarines.html
March 8, 2019 by David Bradley, Inderscience
Credit: CC0 Public Domain
Researchers in China have designed an improved energy-aware and self-adaptive deployment method for autonomous underwater vehicles. The team of Chunlai Peng and Tao Wang of the Guangdong University of Technology, in Guangzhou, provide details in the International Journal of Modelling, Identification and Control.
The researchers explain that autonomous underwater vehicles (AUVs) are essential mobile robots that can travel underwater and perform tasks that are considered to hazardous for people to carry out for various reasons. There are, however, problems that face the operators of AUVs, specifically the fact that control algorithms are not necessarily optimized for distance nor energy consumption.
The team's approach to enabling energy awareness, as well as self-adaptive deployment, has now been tested with ten AUVs. Their work demonstrates that they can reduce energy consumption with their algorithm in the test AUVs by almost a third. This could be a real boon for marine environment monitoring, military missions, search missions after the loss of a craft at sea, and perhaps even after a tsunami, earthquake or other geological catastrophes.
The team concludes their paper with a nod to the future direction of their research. "Future work will study an energy-supplying problem during the ocean rescue that generating trajectories for AUVs to rendezvous with energy-carrying robots, such as mobile charging stations, i.e., a rendezvous problem for AUVs and mobile charging stations," they explain.
https://phys.org/news/2019-03-efficiency-boost-robot-submarines.html
Peng, C. and Wang, T. (2019) 'An improved energy-aware and self-adaptive deployment method for autonomous underwater vehicles', Int. J. Modelling, Identification and Control, Vol. 31, No. 2, pp.182-192. DOI: 10.1504/IJMIC.2019.098005
Deino
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Nice, the BZK-007, which is rarely spotted.
Is there any info on the unit it is assigned to?
Deino
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This operational BZK-007 has a different but similar tail logo and number?
Any idea on this logo? is it a company, a certain unit and so is the number a tactical number or just a c/n.?
bahadur999
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Did you find the affiliation?
JSCh
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Tiny claws let drones perch like birds and bats
Devin Coldewey@techcrunch / 1 day ago
Drones are useful in countless ways, but that usefulness is often limited by the time they can stay in the air. Shouldn’t drones be able to take a load off too? With these special claws attached, they can perch or hang with ease, conserving battery power and vastly extending their flight time.
The claws, created by a highly multinational team of researchers I’ll list at the end, are inspired by birds and bats. The team noted that many flying animals have specially adapted feet or claws suited to attaching the creature to its favored surface. Sometimes they sit, sometimes they hang, sometimes they just kind of lean on it and don’t have to flap as hard.
As the researchers write:
In all of these cases, some suitably shaped part of the animal’s foot interacts with a structure in the environment and facilitates that less lift needs to be generated or that power flight can be completely suspended. Our goal is to use the same concept, which is commonly referred to as “perching,” for UAVs [unmanned aerial vehicles].
“Perching,” you say? Go on…
We designed a modularized and actuated landing gear framework for rotary-wing UAVs consisting of an actuated gripper module and a set of contact modules that are mounted on the gripper’s fingers.
This modularization substantially increased the range of possible structures that can be exploited for perching and resting as compared with avian-inspired grippers.
Instead of trying to build one complex mechanism, like a pair of articulating feet, the team gave the drones a set of specially shaped 3D-printed static modules and one big gripper.
The drone surveys its surroundings using lidar or some other depth-aware sensor. This lets it characterize surfaces nearby and match those to a library of examples that it knows it can rest on.
Squared-off edges like those on the top right can be rested on as in A, while a pole can be balanced on as in B
If the drone sees and needs to rest on a pole, it can grab it from above. If it’s a horizontal bar, it can grip it and hang below, flipping up again when necessary. If it’s a ledge, it can use a little cutout to steady itself against the corner, letting it shut off some or all its motors. These modules can easily be swapped out or modified depending on the mission.
I have to say the whole thing actually seems to work remarkably well for a prototype. The hard part appears to be the recognition of useful surfaces and the precise positioning required to land on them properly. But it’s useful enough — in professional and military applications especially, one suspects — that it seems likely to be a common feature in a few years.
The paper describing this system was published in the journal Science Robotics. I don’t want to leave anyone out, so it’s by: Kaiyu Hang, Ximin Lyu, Haoran Song, Johannes A. Stork , Aaron M. Dollar, Danica Kragic and Fu Zhang, from Yale, the Hong Kong University of Science and Technology, the University of Hong Kong, and the KTH Royal Institute of Technology.
Tiny claws let drones perch like birds and bats | TechCrunch
Devin Coldewey@techcrunch / 1 day ago
The claws, created by a highly multinational team of researchers I’ll list at the end, are inspired by birds and bats. The team noted that many flying animals have specially adapted feet or claws suited to attaching the creature to its favored surface. Sometimes they sit, sometimes they hang, sometimes they just kind of lean on it and don’t have to flap as hard.
As the researchers write:
In all of these cases, some suitably shaped part of the animal’s foot interacts with a structure in the environment and facilitates that less lift needs to be generated or that power flight can be completely suspended. Our goal is to use the same concept, which is commonly referred to as “perching,” for UAVs [unmanned aerial vehicles].
“Perching,” you say? Go on…
We designed a modularized and actuated landing gear framework for rotary-wing UAVs consisting of an actuated gripper module and a set of contact modules that are mounted on the gripper’s fingers.
This modularization substantially increased the range of possible structures that can be exploited for perching and resting as compared with avian-inspired grippers.
Instead of trying to build one complex mechanism, like a pair of articulating feet, the team gave the drones a set of specially shaped 3D-printed static modules and one big gripper.
The drone surveys its surroundings using lidar or some other depth-aware sensor. This lets it characterize surfaces nearby and match those to a library of examples that it knows it can rest on.
If the drone sees and needs to rest on a pole, it can grab it from above. If it’s a horizontal bar, it can grip it and hang below, flipping up again when necessary. If it’s a ledge, it can use a little cutout to steady itself against the corner, letting it shut off some or all its motors. These modules can easily be swapped out or modified depending on the mission.
I have to say the whole thing actually seems to work remarkably well for a prototype. The hard part appears to be the recognition of useful surfaces and the precise positioning required to land on them properly. But it’s useful enough — in professional and military applications especially, one suspects — that it seems likely to be a common feature in a few years.
The paper describing this system was published in the journal Science Robotics. I don’t want to leave anyone out, so it’s by: Kaiyu Hang, Ximin Lyu, Haoran Song, Johannes A. Stork , Aaron M. Dollar, Danica Kragic and Fu Zhang, from Yale, the Hong Kong University of Science and Technology, the University of Hong Kong, and the KTH Royal Institute of Technology.
Tiny claws let drones perch like birds and bats | TechCrunch
bahadur999
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A new solar UAV concept from CASIC's 3rd Academy: Flying Cloud
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