Relational operators in Simscape Language

Hi,

Im trying to create a custom component in Simscapa language. In particular I'm modelnig a GDT (Gas Discharge Tube) and for that I want to create a piece wise function, like the following,

equations
    assert(Threshold_Voltage > 0)
    v == p.v - n.v; % Voltage across between node p and node n

    if (abs(v) < Threshold_Voltage)
        i == v/Insulation_Resistance;
    elseif (Threshold_Voltage <= abs(v) < Glow_Voltage)
        i == v/Break2Glow_Resistance;
    else
        i == v/Glow_Resitance;
    
    end
end

And when I try to download the code to the component the following messsage apears:

So basically inducates me to use this other notation ' (a==b)==c' etc. but I don'r really understand how they work...

¿Does anyone know how this works and have an idea on how to implement it?

Answer 1

[Sabin]

In your case I would change the condition '(Threshold_Voltage <= abs(v) < Glow_Voltage)' into '(abs(v) >= Threshold_Voltage && abs(v) < Glow_Voltage)'. In this way there is no ambiguity and the code should compile. I hope this helps.

[Santiago Alfonso Ospina Botero]

It worked! Thanks!