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Compilation error
Compilation error
class Simplecircuit1
import Modelica;
Resistor R1(R=10);
Capacitor C(C = 0.01);
Resistor R2(R2=100);
Inductor L(L=0.1);
VsourceAC AC;
Ground G;
equation
connect(AC.p,R1.P);
connect(R1.n,C.p);
connect(C.n,AC.n);
connect(R1.p,R2.p);
connect(R2.n,L.p);
connect(L.n,C.n);
connect(AC.n,G.n);
end Simplecircuit1;
Error infoemation: [Simplecircuit1: 10:1-10:9]: Class Ground not found in scope Simplecircuit1.
So how should I deal with this error?
Thank you
Re: Compilation error
The compiler can't find the class `Ground` in scope.
That means there is no Modelica model / class named `Ground` loaded.
There are two ways to fix this:
- Create a new model named `Ground` with a connector for the pin (you are connecting to `G.n`) and the equation describing what ground should do (pin.v = 0).
Take a look at `Modelica.Electrical.Analog.Basic.Ground` from the Modelica Standard Library (MSL) how it is done in that case.
- Use a library that provides electrical components, e.g. from the MSL (4.0.0) `Modelica.Electrical.Analog`.
You will have the same issue for every other model/class you are using in your class `Simplecircuit1`. If you are using MSL you also have some typos in the connect equations
Code:
[...]
connect(AC.p,R1.p);
[...]
The book "Modelica by Example" by by Dr. Michael M. Tiller gives a nice introduction to Modelica and also provides examples on object oriented modeling and simple electric examples similar to what oyu are trying to do in your model: https://mbe.modelica.university/
- AnHeuermann
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