Robotics : 21789


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Subject:	Re: an idea, can someone tell me if this is possible/been done before/etc?
Newsgroups:	lugnet.robotics
Date:	Wed, 3 Dec 2003 13:59:19 GMT
Viewed:	1402 times

"Kevin L. Clague" <kevin_clague@yahoo.com> wrote in message news:HpAAsB.1Kpo@lugnet.com... > The foot on the obstacle is not in the air but on the ground. If you mean that > one foot is on the obstacle and the other can't reach the ground, I see your > point. I was hoping to add a suspension to Quad242 to make it handle a certain > level of uneveness. hmm my english is not very well so i'm explaining in weak way let's say your q242 is walking on a flat surface everything is quite well now ahead q242 there is one stair (it has appropriate size and so on) i can imagine q242 raises its leg moves it over the step and settle down but this time leg stops on the step (which is higher than the ground level) if foot will have mechanism described in former post q242 will not try to push leg to the ground level so leg will stay at the higher level (on the stair) in this case q242 body will stay flat next leg will "walk" over the stair and will be set on the ground level when whole q242 step procedure will be finished (all legs will finish its cycle) q242 will start next cycle with the first leg (this leg stays on the stair) foot mechanism will raise such leg from its state if this description is not undestandable i'll build such a mechnism to show what i meant to say :)))) one word summary: foot mechnism hovever pneumatic works as a touch sensor br pixel

Message has 2 Replies:

		Re: an idea, can someone tell me if this is possible/been done before/etc?
(...) So the pneumatic switch acts as a pneumatic touch sensor and stops the leg from extending fully. I'll keep that in mind. (...) I understand. Thanks for the explanation. (...) Kevin (21 years ago, 3-Dec-03, to lugnet.robotics)

		Re: an idea, can someone tell me if this is possible/been done before/etc?
(...) Yes, I understand that you would have the downward pressure of the step move stop the leg movement by cutting off pressure to the piston(s) driving the foot down. Once this pressure is cut off by the switch, presumably the other legs continue (...) (21 years ago, 4-Dec-03, to lugnet.robotics)

Message is in Reply To:

		Re: an idea, can someone tell me if this is possible/been done before/etc?
(...) I gotta see the movie to really appreciate what you'd like to see. (...) The foot on the obstacle is not in the air but on the ground. If you mean that one foot is on the obstacle and the other can't reach the ground, I see your point. I was (...) (21 years ago, 2-Dec-03, to lugnet.robotics)

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