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In lugnet.technic, Jetro de Chateau wrote:
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TechnicBRICKs has just received official confirmation from TLG that the
1H2010 set 8049 will include pneumatic pistons and has posted some
preliminary pics. That means Pneumatic elements are back!
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A big Thank You to TLG for listening to AFOL requests for pneumatics and
producing set 8049 for 2010.
To celebrate, here are the pictures of my latest pneumatic system.
It allows the cylinder to be commanded to any position.
• not just the two ends
• not just two ends and one position in the middle
• yes, any variable position within its travel!
The variable input is at the red sliding beam.
The variable output is the position of the turquoise lever.
Techniques:
• dithering of valves (with the motor crank) overcomes their hysteresis and
stiction
• offsetting the valve levers removes most of the deadband in the
middle
• feeding back the output allows closed loop control of cylinder
position
This uses no more pneumatic or PF parts than the contents of sets 8049 and 8293,
so the parts will soon be quite accessible.
How it works might take a little
more understanding!
More detailed description / info
http://www.brickshelf.com/gallery/mbellis/Technic/Pneumatics/cont-var-pneu-ctrl/2_cvp_info.txt.
Folder http://www.brickshelf.com/cgi-bin/gallery.cgi?f=405269
You could say pneumatics has just gone analogue!
No longer is it a 2 or 3-state system.
PLMKWYT
Mark
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Message has 2 Replies:
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 | | Pneumatics are back!!
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| (URL) has just received official confirmation from TLG that the 1H2010 set 8049 will include pneumatic pistons and has posted some preliminary pics. That means Pneumatic elements are back! (15 years ago, 22-Sep-09, to lugnet.technic, FTX)
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