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Subject: 
RE: EGAD! (pneumatics)
Newsgroups: 
lugnet.robotics
Date: 
Mon, 16 Jun 2003 13:57:28 GMT
Original-From: 
Rob Limbaugh <rlimbaugh@greenfieldgroup.com(StopSpammers)>
Viewed: 
1998 times
  
> 
> Yes, the switches would need to remember their last set
> state.  Ideally,
> this would be done through the use of electric pneumatic
> switches which,
> when not receiving any power, simply stay in the last
> position they were
> set in.  If this isn't practical then yeah... electronics
> would need to
> be hooked up to keep the switches in their last set state.


That sounds like a coil would have to stay energized, consuming power
all the time.  When power is removed, the state would be reset.

Using a motor to move a mechanical valve control would eliminate that
problem, but then feedback would be needed to determine valve state.



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