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Gearless Actuator from Genesis Robotics promises to revolutionise

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>A Canadian company has developed a gearless, high-torque rotary actuator which, it claims, out-performs traditional gear-based actuators in many ways, while potentially being much cheaper. Genesis Robotics has invested C$28m (US$20.4m / £15.8m) in developing its LiveDrive technology, which it is aiming principally at robotics applications – it believes that the backlash-free technology could revolutionise the design of robotic arms, and halve their costs. The company adds that the lightweight, direct-drive actuators could have many other applications, ranging from prosthetics to vehicles.
According to Genesis, its actuator is three times faster and more powerful than conventional actuators, 100 times more precise, and has a torque-to-inertia ratio 22 times higher than that of a strain-wave actuator. Other remarkable characteristics include the ability to hit a speed of 200 rpm within a quarter of a revolution, and to change direction instantly when required. The technology could also be adapted to produce linear actuators.

The actuator technology made its European debut at the recent Hannover Fair. A team of up to 44 people have been working on the technology in “stealth mode” for the past two-and-a-half years, before revealing the development a few weeks ago. Genesis has spent around $1m applying for eight patents covering the technology, and has already received five “notices of allowance”.
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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.
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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
>>
This technology can finally make powerful exoskeletons possible. I've been keeping a very close eye on this company for months. I'm certain this isn't vaporware

https://m.youtube.com/watch?v=_K4xtUiHz7Y

https://m.youtube.com/watch?v=_X3pXxURci4

https://m.youtube.com/watch?v=IqMdxGigFdY

https://m.youtube.com/watch?v=-7B1HYt7g4U


https://m.youtube.com/watch?v=zMsYXJfxvkc
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Interview with the creators of the Livedrive actuator

https://m.youtube.com/watch?v=P9wskRrACCM
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>>8952016
>This technology can finally make powerful exoskeletons possible.
What does power consumption look like? The issue with exoskeletons isn't so much that they don't exist, it's that you either need an umbilical or some kind of generator to do anything rigorous for more than a few hours.
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>>8951985
Future of Robotics!

A MechE breakthrough!
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>>8952045
I've tried looking for any links on the energy efficiency. All I get is vague claims that it's more efficient than motors with gear boxes. It's only been a month since the company debuted their prototype so I think we will have to wait to know the all the facts about the performance.
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>>8952062
Vague claims typically aren't a good sign but it makes perfect sense that omitting any kind of gearing would improve efficiency so I'll take their word for it. I'm definitely interested in seeing how it turns out.
>>
Electric motors that don't need reduction gears have been out for a while now.
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Seems pretty cool, more interested to see what Boston dynamics does with this over industrial uses.
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>>8952082
Read the article. They never had the performance to replace traditional actuators until now.
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>>8952182
Nobody has linked an article. Or explained what it actually is and how it actually works.

Basically, we've just got some ads here claiming it's the best thing ever.
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>>8952016
>it crushes cans but not an egg

what did they mean by this?
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>>8951985
And it only comes in a donut form factor.
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>>8952016
that variable stiffness thing looks like it would be good for simulating external forces in VR

>>8951997
why does she have the mcdonalds logo on her head
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>>8951985
Their specs are ok, they could potentially get high torque to weight ratios, but they have yet to demonstrate that.
>>8952391
>why does she have the mcdonalds logo on her head
OH MY GOD, you're right.
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>>8952389
Yep
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>>8952378
strong enough to crush a can, gentle enough to handle an egg
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>>8951985
what's an actuator?
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>>8952540
It's a thing that actualizes quantum potentials. The invention of a true gearless actuator would enable the development of things like the replicator and transporter from Star Trek.
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>>8952391
She's one of babidis disciples
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>>8951985
>no live demonstration
>secret invention
>lofty promises

That has all the red flags of a hoax, or a scam.
It reeks of EM-drive and giant, manned robots named “Method-2”.

https://www.youtube.com/watch?v=Re6P7WP2N5w
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>>8952705
I'd like too to see everything open source, free for all to see blueprints and fuck industrial R&D secrecy
It's not like they could live off by selling these things anyway, right lol
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>>8952720
Just give a live demonstration infront of an audience!

If cannot do that, you have no credibility.
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>>8952070
>it makes perfect sense that omitting any kind of gearing would improve efficiency
/sci/ is dumbfuck central

sentiments like this are commonplace

you guys are sad and not worth saving.
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>>8952742
>reducing losses from fiction won't improve efficiency
There's a reason cars don't have the same horsepower at the wheels as they do at the crank.
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>>8952794
So put an engine at every wheel and call yourself elon dicksucker welfare queen.

you don't know shit about shit.
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>>8952800
Then you have massive unsprung weight in each wheel which is terrible for handling characteristics and ride quality.
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>>8952391
That's cuz her name is Margay.
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>>8952800
lel!

Look at that guy! Look at him an laugh!
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>>8952705
They recently went to the Hannover messe trade show to demo their tech

https://vimeo.com/218192046

https://vimeo.com/216050567

http://m.marketwired.com/press-release/genesis-robotics-announces-world-premiere-of-livedrive-at-hannover-messe-2017-2211893.htm
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>>8952829
>https://vimeo.com/218192046

Hm, I stand corrected, then.
I guess the internet has made me a cynic.
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>>8952808
what is a Constant-velocity joint
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Robotics Business Review interview with Genesis Robotics CEO and CTO

https://vimeo.com/210436781
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The white paper for the Livedrive.
You need a membership tho.
https://www.roboticsbusinessreview.com/download/next-gen-actuator-versatility-could-trigger-mass-robotics-adoption/?utm_source=rbr_whitepaper&utm_medium=social&utm_campaign=rbr_content
.
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>>8952861
Elon already makes a regular AWD electric meme machine and there's no way I can compete with him in that market segment.
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>>8952742
Isn't that one of the reasons gearless electric cars like Tesla's are more efficient than cars with gasoline engines with gears?
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>>8952883
The Tesla still has a gearbox, it's just a single speed which does omit some of the other parts you'd see in a transmission like the lay shaft and obviously all the other gears which would slightly improve efficiency.
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>>8951985
but is it reasonably cheap?

precision and speed mean fuck all, if it costs $35,000 and needs $8,000 FPGA to control it
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>40 replies
>Still no one explains how it works

You faggots are terrible salesmen.
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>>8953002
Pay for the membership faggot, and you'll know.

>>8952876
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>>8952941
Apparently,it has the potential to be half the price conventional actuators, with a lower operating cost.
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>>8953012
Yeah it doesn't say, faggot.
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>>8951995
>The company argues that conventional robotic actuators – which represent about 30% of the total cost of a robot
>Genesis reckons that they could halve the cost of developing a robot.
So not only are they free, they actually will give you money to put the actuator in your robot...

This smells like a big load of horse shit.
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>>8953122
nah, its called dominating the market share. you get the actuator for free, but you pay for the maintenance and support. thats where the real money is.

they are trying to set themselves as the "standard" for actuators.
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>>8953140
I can't tell if you're being sarcastic or you're just dumb. If actuators only account for 30% of the cost, then making them free would only reduce the cost by 30%, not 50%...
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>>8953142
there are plenty of instances where a company operated at a loss for a few years just to establish market share or set themselves as the industry standard. you are the dumb one here fag.
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>>8953153
Oh, OK, you're being sarcastic.
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>>8953155
are you seriously claiming that new companies try to make a profit their first few years?
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>>8953167
You're beating a dead horse
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>>8951985
>Genesis has spent around $1m applying for eight patents covering the technology,

Well fucking fuck you too. Now nobody can use the technology. Imagine if somebody patented "cars" and nobody except one company could make cars. What if somebody patented electricity? Light bulbs, the wheel, clothes, computers.

You can't just patent every fucking thing.
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>>8953172
refute my statement.

do you or do you not think that it is a standard practice for new companies to operate at a loss and/or offer their product at some discount for the first few years of the companies inception?
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>>8953174
Other companies can use it you stupid fuck they just have to pay a licensing fee.
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>>8953187
So funny! Epic! Le upboat.
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>>8953174
You literally can just patent every fucking thing
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>>8953221
You don't know that. /sci/ is not a business board.
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>>8953174
I think you're horribly confused about what patents are and why we have them.
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>>8952016
>>8952045
exoskeletons are pretty useless compared to more relevant items
>>
>>8953122
>>8953140
Yeah. Watch he overview video, he literally goes over the money in the robotics industry and claims that they will soon dominate the industry and significantly increase it's size.
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>>8953174
capitalism my friend, so many things have been stagnated by patents in the last ~250 years
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Would this be considered T-800 or T-900 level tech?
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>400rpm max

rotate your way to the nearest trash can
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>>8953327
Its not an engine.
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Found one of the patents
https://www.google.com/patents/US20170047793

I'm 2 dumb to understand this shit though
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>>8953551
so how do patents work in burgerstan? nobody but them can build and sell it?
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>>8953551
So it's like a brushless motor?

Btw I don't trust companies that don't explain shit about their technology.
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>>8953285
We need to abolish patents, then. There would be no downsides for 99% of people. Infact, most people would benefit from the sure in unconstrained technology.
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>>8953584
>sure

*surge goddamnit.
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>>8953584
Lots of people own patents.
You would be basically stealing their property, so of course they want to defend them.
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People that argue against patents are retarded.

Sure, it doesn't always get it right but patents exist for a reason. If you invest money into R&D, then someone steals your idea, there would be literally no incentive to develop anything new.
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>>8951989
The torque to weight ratio of this thing is ~24 Nm/kg peak and 11 Nm/kg continuous.

The actuators on MIT's robocheetah mass 2.1 kg and can produce about 120 Nm peak, giving a torque to weight ratio of 58 Nm/kg.

H54-200 dynamixel servos, which you can buy commercially, mass 0.855 kg and can produce 44.7 Nm torque continuous for a torque to weight of 52 Nm/kg

The torque to weight ratio isn't all that great.
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>>8953142
Boy you need to get out more.
what a dumbass
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>>8953174
>Imagine if somebody patented "cars" and nobody except one company could make cars.

>Reminder that incumbent car companies patented 'cars' and Mr. Ford had to fight them in court to start his car company.
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>>8953584
>commies
Reeee
>>
Non-US patent attorney reporting in
NB: TINLA and IANYL


>>8953551
>Found one of the patents
Strictly speaking this is a patent application. Nte the word "pending" in legal status. A grant is probably some way off. I see they have had one non-final rejection.

>https://www.google.com/patents/US20170047793
Google's patent searches are pretty good and user friendly. Strangely they have two systems and your link is to the old which even more strangely is the one that figures in most search engines. I would rather recommend this one:
https://patents.google.com/patent/US20170047793A1/en

More searching shows they have a lot of applications pending but only one international application that I could find.

>>8953556
>so how do patents work in burgerstan? nobody but them can build and sell it?
In the US a granted patent means exclusivity. There might be expressed licenses though. Infringe and you have to report for anything up to but not including sudoku.

In much of the rest of the world a granted patent covers only commercial and opertional use. So use for teching, research and experimenttaion is allowed.

>>8953583
>Btw I don't trust companies that don't explain shit about their technology.
If the application does not disclose the invention sufficient for a person skilled in the art to work the invention the patent would be invalid. This would be grounds for post grant invalidity proceedings.

I do that as part of my work.
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I think its done by reversing the leads on a 3 phase motor to change direction of magnetic field / rotation.
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>>8954198
Patents last 20 years.
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>>8953174
>>8953584

Patents do have some value.

Imagine you spend $50m on creating some new fancy tech, only for some other company to steal your invention.
Unlike you they wouldn't have to make back that $50m development cost so they could sell it cheaper.

Patents exist for this reason. It's also why they're limited to 20 years.


Besides if they want to make more money they should sell licenses to their tech.
Selling licenses -> higher production volume -> bigger spread of development cost -> cheaper tech -> more products sold
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>>8951985
>A team of up to 44 people
>44

this is how you know this is just fake news.
>>
>>8952016
the fuck are arc-secs?
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>>8954198
>incumbent car companies patented 'cars'
That's nothing! Despite the fact that cranks were known since the Roman Empire, they were repeatedly patented in the early modern period.

James Watson, who greatly improved the steam engine, had to work around a patent on connecting cranks to steam engines, and invented a silly crank with superfluous gears to do so:
https://en.wikipedia.org/wiki/Sun_and_planet_gear
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>>8952883
Most of the efficiency in Teslas comes from the fact electric motors are just highly efficient. A high quality combustion engine with high octane fuel will peak at about 25% efficiency, where as electric motors are about 80-98% efficent
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>>8952883
Teslas are not really gearless. Rather, they have a fixed-ratio transmission because of the electric motor's excellent low-end torque, rather than a conventional variable-ratio transmission for internal combustion engines with good performance only in a relatively narrow RPM range.
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>>8954444
>A high quality combustion engine with high octane fuel will peak at about 25% efficiency
Ferrari and Mercedes newest F1 engines are around 50% efficient. Mazda claims similar numbers with their Skyactiv 2 HCCI engines, although these aren't in any production cars yet.
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>>8954395
The units smaller than individual degrees
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>>8953584
I agree my good friend :^) as a matter o fact, could you join me in a marvelous, free, helicopter ride? I'm sure it will be to die for!
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>>8953551
interesting, a dc motor super magnet (re branded as a gear less actuator),Im pretty sure the idea has been around: the diagram reminded me of
https://youtu.be/QGytW_C6hR8?t=4m48s
in a micro scale to work on their dc motors, its no wonder to have high torque to inertia ratio as well as shear acceleration, almost as if it was instantaneous! almost as if it wire a dc magnet!
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Are they selling stocks?
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>>8953174
>Now nobody can use the technology.

I can use it. So can you. So can China. Patents a shit.
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>>8953583
>Btw I don't trust companies that don't explain shit about their technology.

Me too. I'm still waiting for a tour of a Tyson foods chicken farm (that will never happen).
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>>8952043
>versatle

when they learn to spell maybe they'll be able to learn enough physics to know this can't work
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>>8954508
>around 50% efficient
With an exhaust temperature of a conservative 1000 C it means the combustion engine must be close to melting point.
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>>8953551
thanks bro

>>8953587
can ideas really be owned?
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>>8953587
there's a guy that owns a patent on using wifi as in connecting your laptop to a router using wifi
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>>8954374
>limited to 20 years.
>a whole generation's monopoly
>limit
>limit increases faster than they go out of date
>limit

it's pure and simple a racket and deserves no respect
>>
what's the catch
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>>8953583
Looks like a fance stepper motor to me
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>>8954678
the catch is they invented it 20 years ago and the government secrecy clause is just now expiring

nuke private tech cliques
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>>8954684
Ayylmaoator
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>>8954647
>can ideas really be owned?
Depends. An idea kept secret can be owned as a trade secret. That means people working for you cannot take it with them but others are allowed to reinvent it independently.

An idea cannot be patented. It has to be "reduced to practice" in order to be granted. And a patent gives you an edge over others who reinvent the invention independently.

>>8954670
>it's pure and simple a racket and deserves no respect
It is generally a good idea to at least respect the law.

Also, a patent does not prevent you from inventing something better. Like Japmes Watt's patents relating to steam engines could never stop others inventing the Stirling engine, petrol engine, diesel engine, jet engine etc.

>>8954684
>the catch is they invented it 20 years ago and the government secrecy clause is just now expiring
Care to expand on this? A patent application, unless declared a military secret, will be published after 18 months. Only theold law made submarine patents possible.
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>>8953221
Statistics from the European Patent Office (and many others) show that 50 percent of all patent applicaitons lever lead to grant.

Of the granted patents, about 5 percent are challenged in opposition, a post grant procedure where you can file (within 9 months of the mention of the grant) to have the patent revoked.

Of the opposed patents
1/3 are revoked in entirety
1/3 are maintaine din entirety
1/3 are maintained in a limited form.
>>
>>8953584
>suddenly nobody wants to eat the development cost of new tech because someone will immediately swoop in and use your tech without paying anything
>>
>>8954916
civilian advanced technology is 20 years behind the secret government

they don't file patents, they just keep it secret under pain of the death of your loved ones
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>>8954968
The majority of military equipment is comprised of commercial off the shelf items. Only how the equipment is applied is secret.
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>>8955168
if you know what it is then it's not secret
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>>8953014
>potential to be half the price conventional actuators, with a lower operating cost
topkeks
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>>8955260
>implying I don't have a clearance

:^)
>>
>>8954628
The temperature of the engines could be used to power steam turbines and increase efficiency even further.
>>
>>8955629
Not steam turbines but they do recover a huge amount of heat
>>
>mfw read into this thinking it's legit
>read over patent, it's a brushless motor with smaller profile

Watching interview/debut
>Talks about needing to dissipate high heat yet somehow this is an efficient process
>Talks about needing to engineer with materials that can withstand huge force of magnets. Bro are you kidding?

It looks to me like it's just all hype, they may have something slightly better than actuators today but I honestly think their claims are completely bullshit.
>>
>>8955849
>> high heat
So the way you get more torque with an electric motor is by increasing the current. The problem is more current tends to heat things up, which increases resistance, which heats things up, which increase resistance etc. This makes it impossible to add more current without slagging your motor. If you can dissipate more heat it, you can get more torque without it running away on you

In fact, some japanese robotics company won the first DARPA robotics challenge and got up by google because they had the bright idea to water cool their motors. This let them dump ultracap into them to get high torque bursts

>> huge magnet force
Oh man I really hope so, but yeah I doubt that they are making magnetic fields strong enough to tear metal apart.

Now their other patents cover some weird wave disk actuator, like a harmonic drive but in a disk. So they've got all these weird ass donut motor patents, why can't they just focus on one and make actuators cheap?

Current performance is not much better than current see: >>8953635

But the hype I can believe in is their vision of making actuators so cheap that we can use them for everything that moves. Right now we use actuators like we used vacuum tubes in the 50s, designing around minimizing the number of them. I love their fucking nutty robot with wheels and legs cause that's where we could go if actuators get fucking cheap.

Also fuck them gears are the best
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>>8952389
robot person here, working for ABB robotics

industrial robots need this donut form factor, all the wiring for the actuators, sometimes pneumatic and hydraulic lines for end effectors are getting directed through these holes if the operational safety requires it. you commonly see these kind of form factor on 6 axis welding, sandblasting or varnishing robots, since they have quite thick cable-hose assemblies, which get routed through these donut holes , to make the machine more compact, and IP67 compliant.
means everything is contained within the housings of the robot arm, so no one can just reach into it with hands or tools and damage/hurt themselves. it also adds dust/dirt/moisture protection. in the case of robots handling laquer guns, it is also mandatory to explosion proof the housing, no power supply cables or similar are alowed on the outside of the robot, everything is additionally sealed and filled with either gaseous nitrogen, or positive air pressure inside the arm, to prevent sparking and ingnition of laquer fumes.

these holes are very important for industrial applications.
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>>8956036
>that shitty photoshopped reflection
That's interesting though, mister robot man.
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>>8956036
It's not the hole I got a problem with, it's the L/D ratio. I don't want a pancake, I want a thicc can. Just for you know autism purposes, I don't really know why. But yeah if it's really more rigid and more capable I can probably get over it.

but oh man if you can put these things in parallel that'd really tickle my autism. Like then you could make them redundant and decouple failed ones, or put in actuators specialized for high acceleration
>>
>>8954968
From my time in the defence industry there are two main classes of secrets:
- gross mistakes made by higer officers
- gross mistakes made by politicians.

Most of the rest is trivia.
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>>8956098
It's still a first Gen product. In sure the performance would improve with more iterations
>>
>>8956621
I'm sure you had a need to know about the juicy stuff
>>
>>8957068
Not all of course, only a few tiny bits. And believe me, no things are more juicy than the incompetence of an officer or a politician at the level that could cost them their positions. Just remember the panic caused by Trump when he commented on the outrageous costs for F-35 and other acquisition projects.

Sure, I worked on projects that paid my salary. I also paid the taxes for it. It reaches the level of mixed feeling otherwise only achieved when you see yor mother in law driving off the cliff in your spanking new sports car.
>>
>>8957120
my mother in law is awesome. i love her.
>>
>>8952540
"a device to convert control signals into actual movements" -Battle Angel Alita manga
>>
>>8953551
>https://www.google.com/patents/US20170047793
Why can't I see any picture?
>>
>>8957553
Same problem here. You can see the figures in the PDF though.
>>
File: 1465746634321.jpg (871KB, 1277x849px) Image search: [Google]
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Hey!!! Can somebody help me with this problem about hydraulic? If i now that the density of a fluid is 0,85 g/cm^3, its pression of 2,1*10^13(Pa) and that the initial speed of the fluid was 17 m/s and the final was 47 m/s, how can i know the final pression?
>>
>>8952837
https://vimeo.com/216050567 This is a nice video
>>
>>8954395

One 1/3600th of a degree.
>>
>>8957663
Yes, and it is visualised here:
>https://vimeo.com/218192046
>>
>>8953142
You idiot, new actuators would also allow for other cheaper technologies to replace existing ones. It's not only about the price of the actuators.
>>
File: dims (1).jpg (406KB, 1400x787px) Image search: [Google]
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So can these actuators be used in robots that handle objects in warehouses?
>>
>>8958143
Does a bear shit in the woods?
>>
File: ac.jpg (44KB, 372x400px) Image search: [Google]
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massive humanoid exoskeletons when
>>
How small can they be?
>>
>>8959102
>what is power supply
>>
>>8952016
Isn't that the same type of technology used in Fidget Spinners?
>>
>>8959102
We'd probably need lithium Air or solid state batteries.
>>
>>8954395
the fuck is google?
>>
>>8959102
I fucking loved AC3
>>
>>8952016
>Exoskeletons
GOD DAMN NOT THIS MEME SHIT AGAIN
>>
>>8960323
No, you're the meme. Exoskeletons are now successful commercial products:
http://eksobionics.com/
>>
>>8952861
A troublesome fact that the unsprung mass brigade will never touch.
>>
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>>8960323
>why no guntank
>multipurpose double cannon/howitzer on tracks
>with optional manipulators
>>
>>>8959148
KYS
>>
>>8961824
Shitty mobility and manoeuvrability.
>>
File: Handle-Robot-Boston-Dynamics.jpg (18KB, 700x500px) Image search: [Google]
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I wonder how these actuators will perform in the Boston dynamics robot Handle.
>>
>>8955260
>"Them"
>>
>>8961824
Because being in the Guntank is a one way track to being the worst pilot between you and your friends, who get the Guncannon and Gundam. How do you even do anything in space with the Guntank?
>>
>>8959102

I dunno.
Quite a bit sooner now than before.
>>
>>8962150
They won't. Boston dynamics only uses hydraulics
>>
>>8962378
No they don't. They use whichever makes sense. There's a mix of hydraulic and electric actuators in Handle.

As electric actuators improve, they'll probably use them more often.
>>
>>8951985

Just an exosuit with jet pack... how hard can it be?
>>
So it's a beefy electric motor? How does it work?
Patents obviously pending, right? Should be able to find it.
>>
>>8962378
How do these actuators compare to hydraulics?
>>
>>8951985
>has developed a gearless, high-torque rotary actuator
>100 times more precise, and has a torque-to-inertia ratio 22 times higher than that of a strain-wave actuator. Other remarkable characteristics include the ability to hit a speed of 200 rpm within a quarter of a revolution
Something tells me this is a new Theranos right there.
But... we'll see.
>>
gears
>>
>>8963736
Obsolete
>>
>>8961775
Believe it or not, cv joints still have a decent amount of friction. A thompson coupling would be better.
>>
>>8964320
Then why do their patents say they use gears?
>>
>>8965563
>GEAR-LESS Actuator from Genesis Robotics promises to revolutionize robotics
>>
>>8954628
The thermodynamics of a cylinder are VERY non-equilibrium. First of all, you have only transient pulses of hot combustion, immediately followed by expansion (adiabatic cooling), exhaustion and replacement with cool induction air - that alone is enough to keep the cylinder walls far below peak Carnot combustion temperature. On top of that, you have coolant drawing heat away from the cylinders, creating a large heat flux and in turn a thermal boundary layer in the fluid nearest to the cylinder walls (not unlike the same phenomenon found in regeneratively-cooled liquid rocket engines).
>>
>>8951985
Sooooo..... it's basically one of these, right?
https://en.wikipedia.org/wiki/Piezoelectric_motor
>>
>>8954961
>Implying it doesn't already work like that anyways
What's the point in innovating and patenting if Xinpinglangong Industries is just going to rip you off anyways?
>>
>>8965625
no
>>
>>8957617
use your units cunt. pressure is in the units somewhere, and what are the units for pressure? How do they relate to what you have?
>>
>>8965695
Stop replying to homework scum.
>>
>>8951985
We could use it to built the mecha from this >>8960127 thread
>>
>>8966374
Nah it's not good enough to make mecha.
>>
>>8966587
What applications is it good enough for?
>>
>>8966603
that depends on the cost. We don't know the cost yet.
>>
>>8966606
Hypothetically, if these are half the cost of conventional actuators with similar performance, what can these actuators be used for?
>>
>>8966740
All the things that normal actuators are used for, but at a lower cost.
Thread posts: 171
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