simulink switch (for a single use)

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Hi guys I am new with Simulink and igot a problem about switch block.
I want to pass a signal once it reaches a certain value and doesn't matter if it drops or exceeds further.
Let me give an example.
Let say i have two signals 'h' (altitude of an aircraft) and 'v' (speed of that air craft).
Let say i want to pass 'v' signal once my altitude reaches 10000 ft. It doesnt matter if my altitude drops or exceeds 10000ft after i reach 10000ft. Is there any way to do this ?

Accepted Answer

Azzi Abdelmalek
Azzi Abdelmalek on 11 Nov 2014
Edited: Azzi Abdelmalek on 11 Nov 2014
You can use Matlab function block with the code:
y=function(h,v)
persistent m
if isempty(m)
m=0
end
if h<=1000 & m==0
y=h
else
m=2000
y=v
end
  1 Comment
Brasco , D.
Brasco , D. on 12 Nov 2014
Thank you very much. This solves my problem.

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