Archived threads in /sci/ - Science & Math - 467. page

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The 269mm-diameter and 16mm-thick ring-shaped actuator on show in Hannover weighs 5.1kg and can deliver a peak torque of 120Nm (54Nm continuous). It has a top speed of 400 rpm (limited by the performance of its bearings), and is claimed to have a repeatability of 0.2 arc-seconds, and a torque-to-inertia ratio of 2.2kNm/kgm2. The actuators can be stacked together to achieve higher ratings, and could be scaled to different sizes. They can be used with existing controllers.

The actuator is the brainchild of Genesis’ founder and chief technology officer, James Klassen. There are three key aspects to the design. The first is an “amplifying” technique that is claimed to almost double the force of the permanent magnets used in the devices. The force is said to be so powerful that it would collapse a conventional motor. So, the second development was to design a rigid structure to withstand these forces. The third discovery was a way to dissipate the high levels of heat that a motor of this power generates.

Because the actuators do not need gears, belts or pulleys, they can stop or change direction extremely quickly – thus improving safely. The mechanical components needed for traditional robotic actuators create backlash, compliance and high inertia – all of which reduce safety, according to Genesis.

At Hannover, Genesis was focusing on potential uses for its technology in robots. The company argues that conventional robotic actuators – which represent about 30% of the total cost of a robot – have several drawbacks. They are relatively slow, which limits their productivity. Their backlash affects precision, while their relatively high inertias hamper rapid safety stops. High back-drive friction, combined with the high inertia, can make gear drives susceptible to damage during impacts – either accidental or intentional.

The elimination of backlash in the new actuators should avoid jerky movements, and because of their simplicity – there is only one moving part – they are expected to be reliable and easy to manufacture. According to Klassen, they are also “difficult to damage”. The actuators do not contain much copper, thus cutting their costs. Genesis reckons that they could halve the cost of developing a robot.

“Traditional gearbox and drive belt actuators are holding back the entire robotics industry,” Klassen argues. “Existing direct-drive actuators are too heavy to use in robotics,” he adds. “Combined, our three discoveries achieve a level of torque-to-weight that is significantly higher than any other direct-drive motor on the market. We believe this will change the entire industry by allowing the LiveDrive to be used directly in the joints of robots.”

Klassen’s vision for the new technology goes beyond using the actuators in industrial robots. “Imagine a world where rehab involves putting on an exoskeleton and programming it to do your physio exercises, or where healthcare, military and factory workers can have robots assist them with the heavy-lifting required to do their jobs,” he suggests. LiveDrive makes this possible, as the technology makes it safe for humans and robots to interact.”

CEO, Mike Hilton, expects the new actuator technology to disrupt the robotics market. “We worked to address the limitations of traditional robotics to usher a new era, which will improve the lives of workers and revolutionise entire industries,” he says. “Robots today present safety and productivity concerns for both workers and employers. Our actuators enable robots to stop instantly. This, along with the numerous other benefits of LiveDrive, opens up new possibilities for faster, safer, more versatile robots that improve the human experience.”

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>>8951985
>>8951989
That's bullshit, but I believe it

>>8965218
Yes.

>>8965218
no, literally pick any other book

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>>8965232
>explain

Fuck off back to /pol/ moron

>>8964227
Anon, if you're male and have "a lot of estrogen", for any reason what so ever, you need to go see a doctor, you have some serious endocrine problems.

>>8964234
Sorry, maybe not a lot. I don't know much about this stuff. But I imagine I have slightly more than normal because of all the bottled water I drank and stuff. And the almost complete lack of exercise.

>>8963946
Are you insecure?

>>8963946
not for you, OP. not for you.

>>8963964
y-yes.

>>8963440
Anon, set your hand on fire. Notice how your foot is now not as hot as your hand, despite the fact that they're connected.

>>8963441
not the same thing.... ocean is water, water is fluid, flesh is not fluid

put water in pot, boil it, it is same temperature

>>8963444
If you're just going to call the very dumbed down explanations given to you because you're a retarded crossboarder wrong then you can just get out of here with your retardation.

same reason why there's more male to female transgenders than female to men, men are just way more likely to want to embrace the feminine role than the other way around

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>>8963338
Are we all cucks ?

>>8963336
bump

>>8963135
>I want to babble about retarded unfalsifiable, unprovable bullshit

>>8963135
Fuck right off.

>>8963155
The first 3 are completely provable.
The fourth is neither unprovable, nor provable.

Retarded is subjective, last time I checked trie scientists are not supposed to be subjective.

>>8962339
Algebra was not invented in the Medieval Islamic world, but was greatly developed there.Moreover, your same line of reasoning could be used to discredit the Ancient Greeks for a number of mathematical discoveries, especially in geometry, where Egypt was often the source. In the end, who discovered what doesn't matter in the slightest. What's important is that we continue to build on the discoveries of our predecessors.

>>8962339
>their non-Muslim (possible) ancestors
>(possible)
AHAHA, anyway

you are retarded if you take credit for achievements of your ancestors when you had nothing to do with them, i agree there

Just because a more ancient civilization did it first, doesn't mean other independent inventions aren't valid. Though, muslim scholars borrowed heavily from the greeks who themselves borrowed heavily from the Egyptians and Babylonians.

>>8962124
a rock

>>8962124
nice bud bro
smoke the shit out of it

>>8962124
packaging plastic.

>>8959091
Well we have pictures, but they deny those. So my conclusion is that they're brain damaged (or trolling).

the fucking gravitational instability of it for starters

or lack of other gigantic disc-shaped stellar objects

>>8959091
They can deny any proof because they think it's all a conspiracy and that they're being lied to.

good luck mice & fruit flies

that tape measure style solar array is pretty cool as well

>>8949211
This is the first reuse of any capsule, isn't it?

(of course, there's the space shuttle, but it wasn't exactly a capsule)

>>8949346
Russians did it once with the VA capsule. Unmanned

>>8964508
>Muh human rights
Also, would it work?

- Immoral
- Expensive

Should just cut their balls off instead

>>8964513
>>8964514
How is that really immoral? Most criminals have way too much testosterone, I don't mean turn them full on female.

>>8964124
>heterogeneity of the universe
The universe homogeneous. Quite astoundingly so.

>>8964124
Inflationary Period is theory saving of highest highest order.

If you understand that the fact that the Universe is expanding does not necessarily mean it started out as a point, a lot of the nonsense infecting astrophysics disappears.

When you have an expanding nebula of gas and debris after a super nova, are you going to conclude that you can trace the path of the constituent particles back to a point source? Of course not.

Virtual particles being stretched during the inflationary epoch.

>>8963859
>Do most mathematicians turn down monetary prizes to virtue signal how humble they are?
who has turned down monetary prizes other than Perelman/Grothendieck? Perelman turned his down because he didn't think he deserved it and Grothendieck said he had enough money already

> Is being able to do that the REAL prize attached to the millenium problems and such?
i hope whoever solves the next one declines it just for laughs

>>8963859
>virtue signal
neck yourself you absolute cretin

>>8963869
Why don't you stop being a rude meanie and answer my question?

>>8963721
Venus is hot as fuck anon
And the Soviets sent Probes to Venus so now it's comunist already and not worthing colonizing

>>8963721
It is actually easier to terraform from scratch, like on Mars for example, which has a really thin atmosphere and is cold, but on Venus the atmosphere is too dense and has a high concentration in carbon dioxyde, which also makes the planet a literal hell.
There has been ideas involving balloons or zeppelins for short manned missions on the planet, to stay at an altitude where the atmosphere is thiner and the temperatures lower

>>8963740
They've sent probes on Mars also.