conditional define

Author: baggepinnen

Project.toml

@@ -1,7 +1,7 @@
 name = "ControlSystemsMTK"
 uuid = "687d7614-c7e5-45fc-bfc3-9ee385575c88"
 authors = ["Fredrik Bagge Carlson"]
-version = "0.1.1"
+version = "0.1.2"
 
 [deps]
 ControlSystemIdentification = "3abffc1c-5106-53b7-b354-a47bfc086282"

src/ode_system.jl

@@ -231,12 +231,13 @@ function RobustAndOptimalControl.named_ss(
     )
 end
 
-function ModelingToolkit.get_disturbance_system(dist::ModelingToolkit.DisturbanceModel{<:LTISystem})
-    ControlSystemsBase.issiso(dist.model) || error("Disturbance model must be SISO")
-    Blocks.StateSpace(ssdata(ss(dist.model))..., name=dist.name)
+if isdefined(ModelingToolkit, :get_disturbance_system)
+    function ModelingToolkit.get_disturbance_system(dist::ModelingToolkit.DisturbanceModel{<:LTISystem})
+        ControlSystemsBase.issiso(dist.model) || error("Disturbance model must be SISO")
+        Blocks.StateSpace(ssdata(ss(dist.model))..., name=dist.name)
+    end
 end
 
-
 """
     build_quadratic_cost_matrix(matrices::NamedTuple, ssys::ODESystem, costs::Vector{Pair})