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Simulink: warning Log in zero in one function

  1. Nov 26, 2014 #1
    I have this problem (warning: log of zero in one function) when i try to simulate one system which apparentely doesn't have any problem.
    in order to follow with my project i need to know how to change something parameters or whatever that is doing that my equation give me this mistake.
    The equation is:
    where all the dates i put are temperatures calculated with another equations with integrator blocks.
    how can i do to can change the initial values and the equation could work?
  2. jcsd
  3. Nov 26, 2014 #2


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    2017 Award

    Staff: Mentor

    Did you check if ##\Delta T_A## is zero somewhere? If yes, what should Simulink do in this case? If no, there should be no log of zero involved.
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