10-05-2016, 04:06 PM | #11 |
Join Date: Jun 2005
Location: Lawrence, KS
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Re: Battlesuit ST
Well, if you feel that way, you ought not to use the Fixed ST mechanic from GURPS Supers. Easy peasy.
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10-05-2016, 04:44 PM | #12 | ||||
Wielder of Smart Pants
Join Date: Aug 2004
Location: Ventura CA
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Re: Battlesuit ST
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Well, I don't feel strongly either way, the exact mechanics are subject to the need at hand. However I don't get any impression that the OP is talking about Iron Man holding up a jumbo jet by with his fingers, but rather with more realistic exoskeletons. He specifically mentions GURPS Ultra-Tech and concerns with the engineering needed to do this. Last edited by sir_pudding; 10-05-2016 at 04:55 PM. |
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10-05-2016, 04:47 PM | #13 | |
Join Date: Feb 2005
Location: Berkeley, CA
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Re: Battlesuit ST
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10-05-2016, 07:19 PM | #14 | ||||
Join Date: Oct 2008
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Re: Battlesuit ST
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I guess a schematic is needed since a push sensor on both sides it so complex apparently. <-Direction A Direction B-> A section of say the arm and the exoskeleton around it. *a###b* *a###b* *a###b* *a###b* *a###b* *a###b* *=exoskeleton a=pressure sensor on side A ###=Arm b=pressure sensor on side B The user moves the arm in direction "A": ->The sensor "a" detects a pressure/force increase as the use tries to "push" in that direction. ->The sensor "b" detects a lessening of pressure as the user is trying to move the arm away from that direction". ->The computer thus notices that the exoskeleton should move in direction "A" too and starts the movement in that direction. ->The assisted movement thus allows the users arm to move easily in direction. Thus as long as the user is pressing the arm against sensor "a" harder than towards sensor "b" indicating movement in that direction the arm moves. If the user slows down the push in direction "A": ->The sensor "b" detects that the pressure increases. ->The sensor "a" detects a lessening of pressure. ->The computer thus notices that the exoskeleton should slow down move in direction "A". And slows it down relative to the pressure. ->The assisted movement thus allows the users arm to slow down and the pressure on "b" lowers until the pressure on both sensors is equal. Thus when the user stops trying to move his arm in that direction the exoskeleton stops. The same in opposite way for moving towards direction "B". All those changes in speed can happen really fast with sensor technology detecting changes in the pressure fast, computers processing the needed signals fast and electric motors being fast to change power. Thus the user really does not have to lift/push more weight than their own arm+the sensor sensitivity limits+error margin. That is the base system. You would of course need more than 2 sensors to get things like hand rotation and such, but the above is the simplified version to show the base movement. Obviously the real system has to also take into account things like the effects of gravity pressing the arm more against one side as the angle changes, movement limits, twitch protection and such, but that is just engineering, more sensors and calibration. Also a desirable trait is that the suit "pushes back" a bit in a way that is relative to the strain on the motors to give better feedback. But even this feedback does not need to be equally strong for all users and in any case can(and likely should) be significantly lower than maximum user strength. Actually allowing the user ST to be used to assist the exoskeleton would make the sensors more complex as they would have to take into account the varied strengths and be strong enough to allow that strong push against them often. Thus the current experimental implementations of exoskeletons that I have read about use only "light" push from the user. Thus they act like "fixed ST" exoskeletons, not +ST. Though the "light" in some of them is fairly high (but still far from maximum effort) to cut down wrong impulses, but is steady regardless of the user, better sensors and calibration cuts down on that need. Quote:
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10-05-2016, 08:11 PM | #15 | |
Join Date: Feb 2005
Location: Somewhere outside London, UK
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Re: Battlesuit ST
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10-05-2016, 09:12 PM | #16 |
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Join Date: Oct 2007
Location: Indianapolis, IN
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Re: Battlesuit ST
Sir Pudding - did you perhaps miss reading Starship Troopers by Heinlein? The main character gives a run down of how the suits work that has pretty much become gospel because it was good engineering. You don't operate a suit you just wear it. You move, it moves with you. Move hard and the suit adds strength. So a bounce becomes a leap. It takes practice to handle an egg but smashing walls is easy.
What weby is outlining is substantially the same.
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Joseph Paul Last edited by Joseph Paul; 10-05-2016 at 09:16 PM. |
10-05-2016, 11:06 PM | #17 | |
Wielder of Smart Pants
Join Date: Aug 2004
Location: Ventura CA
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Re: Battlesuit ST
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10-05-2016, 11:53 PM | #18 | |
Join Date: Oct 2010
Location: earth....I think.
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Re: Battlesuit ST
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I am sleepy so if none of this makes sense its because I am sleepy and should be ignored... |
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10-06-2016, 12:41 AM | #19 |
Join Date: Jul 2012
Location: A crappy state called Illinois
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Re: Battlesuit ST
Pretty much this. Most systems I've researched used force feed back so that the user felt a portion of the weight they were moving. This helped the user maintain a sense of what they were moving and acted as a safety system as well, if the user didn't feel how heavy what he was moving was, he's liable to lose control and accidentally throw heavy objects around.
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10-06-2016, 05:23 AM | #20 | |
Join Date: Oct 2008
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Re: Battlesuit ST
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battlesuits, strength |
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