Subject:
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Mars rovers use Lego principles?
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Newsgroups:
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lugnet.robotics
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Date:
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Thu, 5 Jan 2006 00:15:06 GMT
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Original-From:
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dan miller <DANBMIL99@YAHOOspamcake.COM>
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Viewed:
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1652 times
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Hey, isn't this the same principle the RCX uses to brake motors? I've never
heard of it being used on larger robots.
"On Spirit and Opportunity, the brakes are designed to keep the rover wheels
from being bumped off course while driving. Dynamic braking is accomplished
via a relay switch that places a short across the motor windings of an
actuator [motor] that is not being used. If that actuator starts to move
unexpectedly, it acts as a generator and the short provides an electrical
load that slows the motor down. The same principle is used to generate
electrical energy for hybrid cars when the brakes are applied."
http://www.planetary.org/news/2004/1209_Mars_Exploration_Rovers_Update_Spirit.html
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Message has 1 Reply:
 | | Re: Mars rovers use Lego principles?
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| As far as I know, it's the standard process for implementing a brake. All the electric forklift trucks I drove used this method as the main brake. There was a mechanical emergency brake as well, but the main brake was to use the motor to generate (...) (19 years ago, 5-Jan-06, to lugnet.robotics)
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Message is in Reply To:
| | LASM Question
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| Hi, How can I use sensors in Visual Basic using the LASM Command I wan to sense touch on input port 1 Also where can I find complete doc for LASM. Thx SQ (19 years ago, 28-Dec-05, to lugnet.robotics)
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