test: use System in examples/*.jl

Author: AayushSabharwal

examples/electrical_components.jl

@@ -4,13 +4,13 @@ using ModelingToolkit: t_nounits as t, D_nounits as D
 
 @connector function Pin(; name)
     sts = @variables v(t) [guess = 1.0] i(t) [guess = 1.0, connect = Flow]
-    ODESystem(Equation[], t, sts, []; name = name)
+    System(Equation[], t, sts, []; name = name)
 end
 
 @component function Ground(; name)
     @named g = Pin()
     eqs = [g.v ~ 0]
-    compose(ODESystem(eqs, t, [], []; name = name), g)
+    compose(System(eqs, t, [], []; name = name), g)
 end
 
 @component function OnePort(; name)
@@ -20,7 +20,7 @@ end
     eqs = [v ~ p.v - n.v
            0 ~ p.i + n.i
            i ~ p.i]
-    compose(ODESystem(eqs, t, sts, []; name = name), p, n)
+    compose(System(eqs, t, sts, []; name = name), p, n)
 end
 
 @component function Resistor(; name, R = 1.0)
@@ -30,7 +30,7 @@ end
     eqs = [
         v ~ i * R
     ]
-    extend(ODESystem(eqs, t, [], ps; name = name), oneport)
+    extend(System(eqs, t, [], ps; name = name), oneport)
 end
 
 @component function Capacitor(; name, C = 1.0)
@@ -40,7 +40,7 @@ end
     eqs = [
         D(v) ~ i / C
     ]
-    extend(ODESystem(eqs, t, [], ps; name = name), oneport)
+    extend(System(eqs, t, [], ps; name = name), oneport)
 end
 
 @component function ConstantVoltage(; name, V = 1.0)
@@ -50,7 +50,7 @@ end
     eqs = [
         V ~ v
     ]
-    extend(ODESystem(eqs, t, [], ps; name = name), oneport)
+    extend(System(eqs, t, [], ps; name = name), oneport)
 end
 
 @component function Inductor(; name, L = 1.0)
@@ -60,12 +60,12 @@ end
     eqs = [
         D(i) ~ v / L
     ]
-    extend(ODESystem(eqs, t, [], ps; name = name), oneport)
+    extend(System(eqs, t, [], ps; name = name), oneport)
 end
 
 @connector function HeatPort(; name)
     @variables T(t) [guess = 293.15] Q_flow(t) [guess = 0.0, connect = Flow]
-    ODESystem(Equation[], t, [T, Q_flow], [], name = name)
+    System(Equation[], t, [T, Q_flow], [], name = name)
 end
 
 @component function HeatingResistor(; name, R = 1.0, TAmbient = 293.15, alpha = 1.0)
@@ -79,7 +79,7 @@ end
            h.Q_flow ~ -v * p.i # -LossPower
            v ~ p.v - n.v
            0 ~ p.i + n.i]
-    compose(ODESystem(eqs, t, [v, RTherm], [R, TAmbient, alpha],
+    compose(System(eqs, t, [v, RTherm], [R, TAmbient, alpha],
             name = name), p, n, h)
 end
 
@@ -90,6 +90,6 @@ end
     eqs = [
         D(h.T) ~ h.Q_flow / C
     ]
-    compose(ODESystem(eqs, t, [], [rho, V, cp],
+    compose(System(eqs, t, [], [rho, V, cp],
             name = name), h)
 end

examples/rc_model.jl

@@ -13,5 +13,5 @@ rc_eqs = [connect(source.p, resistor.p)
           connect(capacitor.n, source.n)
           connect(capacitor.n, ground.g)]
 
-@named rc_model = ODESystem(rc_eqs, t)
+@named rc_model = System(rc_eqs, t)
 rc_model = compose(rc_model, [resistor, capacitor, source, ground])

examples/serial_inductor.jl

@@ -12,7 +12,7 @@ eqs = [connect(source.p, resistor.p)
        connect(source.n, inductor2.n)
        connect(inductor2.n, ground.g)]
 
-@named ll_model = ODESystem(eqs, t)
+@named ll_model = System(eqs, t)
 ll_model = compose(ll_model, [source, resistor, inductor1, inductor2, ground])
 
 @named source = ConstantVoltage(V = 10.0)
@@ -29,5 +29,5 @@ eqs = [connect(source.p, inductor1.p)
        connect(resistor2.n, inductor2.p)
        connect(source.n, inductor2.n)
        connect(inductor2.n, ground.g)]
-@named ll2_model = ODESystem(eqs, t)
+@named ll2_model = System(eqs, t)
 ll2_model = compose(ll2_model, [source, resistor1, resistor2, inductor1, inductor2, ground])