Schmitt Trigger in Simulink 1

[Ovechkin]

Is there an actual block in simulink for schmitt trigger or a simple way to simulate it?

I dont seem to find anything on mathworks.com

Thanks

 

[brokensoul]

Ovechikn,


Try:

http://www.mathworks.com/access/helpdesk/help/toolbox/simulink/slref/relay.html

or

A simple model built from the description given at:

http://hyperphysics.phy-astr.gsu.edu/HBASE/electronic/schmitt.html#c1

signal path:

*Vcc --> + Vref --> - Vin --> sign() --> *Vcc
L__>Vout
pseudocode

Vout=(Vref+Vcc)-Vin
Vcc=sign(Vout)*Vcc


I hope this helps.



BSK

 

[brokensoul]

I threw together a test model to see if the relay block or my model worked. I think that the greatest promise is inthe relay block as it is cable of emulating the response shown on the webpage i found. The pseudo code i wrote and put into simulink creates a algebraic loop, and i have yet to get it to work.

Drop me a line if the relay block fills your need and if it doesnt please tell me why, i always like a good puzzle.
BSK

 

[Ovechkin]

Thanks for the Relay block. I'm still a rookie with Simulink and dont know all the fancy names for the blocks =)

It seems to work fine for now and I didn't attempt your pseudo code (not that I understood it clearly but Relay seems to work).

Thanks a bunch.