How to pass a struct to a model reference instance?

Hi all,

I have a Simulink Parameter containing a struct that I would like to pass on to a model reference instance.

Using the parameter from the basae workspace is no problem, but I need to use different parameters for the individual instances.

My idea was to use the instance parameters, but it seems like I cannot use a struct there.

Data type "auto" is not allowed and struct is not available.

The parameters I'd like to pass on look like this:

Is there a way to use a struct as instance parameter?

Or is there maybe a totally different approach?

Any help would be highly appreciated. :)

Thanks!

Christopher

Answer 1

[Christopher Fromme]

I managed to solve this by adding the parameter programmatically.

Initially, I had a structure containing Simulink Parameters, that I would like to use as Model Instant Parameter:

ctrl1_struct = 
  struct with fields:
       tholdoff: [1×1 Simulink.Parameter]
           vdc2: [1×1 struct]
    demagPeriod: [1×1 Simulink.Parameter]
        itr2min: [1×1 struct]

But this does not work. You can add it to the model workspace but not use it as argument.

The solution is to convert it into a Simulink Parameter, which has the structure as value:

ctrl1 = Simulink.Parameter(ctrl1_struct)

ctrl1 = 
  Parameter with properties:
          Value: [1×1 struct]
      CoderInfo: [1×1 Simulink.CoderInfo]
    Description: ''
       DataType: 'struct'
            Min: []
            Max: []
           Unit: ''
     Complexity: 'real'
     Dimensions: [1 1]

Then you can add it to the workspace:

myModelWorkspace = get_param('app_dcdc_prio1Ctrl','ModelWorkspace');
assignin(myModelWorkspace, 'ctrl1', ctrl1);

Now it is usable as argument and thus as model instance parameter.

Answer 2

[madhan ravi]

elems(1) = Simulink.BusElement;
elems(1).Name = 'Chirp';
elems(2) = Simulink.BusElement;
elems(2).Name = 'Sine';
Sinusoidal = Simulink.Bus;
Sinusoidal.Elements = elems;
Sinusoidal1 = Simulink.Bus.createMATLABStruct('Sinusoidal'); % structure must be a Bus datatype

%Set the values for the parameter
Sinusoidal1.Chirp = 0;
Sinusoidal1.Sine = 1;

myParameter = Simulink.Parameter(Sinusoidal1) % pass the parameter values to the parameter object
myParameter.DataType = 'Bus: Sinusoidal'

[Christopher Fromme]

Thanks a lot for your reply.

Unfortunatelly, I would like to use the struct directly for block parameters.

But I think I found a solution now, I'll post it as answer here.