[HN Gopher] Types of Robotics Papers
___________________________________________________________________
Types of Robotics Papers
Author : reteltech
Score : 28 points
Date : 2021-05-01 19:11 UTC (3 hours ago)
(HTM) web link (twitter.com)
(TXT) w3m dump (twitter.com)
| Animats wrote:
| That's very good.
|
| Note lack of "we built an agricultural fruit-picking arm that can
| survive five years of picking".
|
| Remember Tesla's robotic charging arm? [1] That was a good idea.
| If Tesla ever gets unsupervised autonomous driving to work
| reliably in parking lots, that will be useful. Then cars can
| self-charge.
|
| (The snake arm seems complicated, but it's not. The arm is just
| segments, cables, and discs. The motors are all in the base. So
| this can be built in a way such that damaged arm replacement is
| about as hard as gas pump hose replacement. Snake arm robots are
| not used much because they have a wear problem where the cables
| go through the discs. But that's for painting robots, which move
| constantly. A charging robot makes maybe ten moves a day.)
|
| [1] https://youtu.be/uMM0lRfX6YI
| calabroa wrote:
| Wireless charging is much better for the use case for
| autonomous charging than the robot chargers... it's equally
| efficient with no moving parts, less prone to failure.
| Animats wrote:
| Qualcomm Halo is able to transmit about 3.5KW. They once got
| up to 20KW in a demo. The technology has been sold off to
| WiTricity. Tesla's biggest Supercharger model transfers
| around 250KW. Although Qualcomm has been announcing that
| technology since 2013, there seem to be no non-demo
| installations.
| calabroa wrote:
| "A partnership between Cabonline, Jaguar, Momentum
| Dynamics, and Fortam Recharge are launching a wireless
| charging taxi fleet in Oslo, Norway. The fleet consists of
| 25 Jaguar I-Pace SUVs equipped with inductive charging pads
| rated at 50-75 kW. The pads use resonant inductive coupling
| operating at 85 Hz to improve wireless charging efficiency
| and range." [1] https://spectrum.ieee.org/cars-that-
| think/transportation/adv...
| Animats wrote:
| "Are launching". "Will be". No follow up on how it
| worked, a year later.
| beambot wrote:
| There's no way that wireless power transfer achieves the same
| efficiency as a wired connection.
| mhh__ wrote:
| The efficiency metric would need to take into account the
| number of cars it can charge at a given time and things
| like that also.
| _Microft wrote:
| Tesla later filed a different idea for patent that involved a
| charging connector at the bottom of the car and a movable plug
| in the ground of the charging station that could be moved in
| x/y direction to compensate for differently parked cars above
| it. From what I remember this system even included a connection
| for a cooling fluid that would have run through a heat
| exchanger in the car. That would allow to charge the battery
| even faster as the resulting heat could have been dissipated
| via a dedicated cooling system of the charging station.
|
| https://electrek.co/2017/04/22/tesla-patent-automate-chargin...
___________________________________________________________________
(page generated 2021-05-01 23:01 UTC)