Simulink.SimulationInput class

Package: Simulink
Superclasses:

Creates SimulationInput objects to make changes to a model for multiple or individual simulations

Description

The Simulink.SimulationInput object allows you to make changes to a model and run simulations with those changes. These changes are temporarily applied to the model. Through Simulink.SimulationInput object, you can change:

• Initial state

• Model parameters

• Block parameters

• External inputs

• Variables

Through the Simulink.SimulationInput object, you can also specify MATLAB^® functions to run at the start and the end of each simulation by using in.setPreSimFcn and in.setPostSimFcn, respectively.

Construction

in = Simulink.SimulationInput('modelName') creates a SimulationInput object for a model.

Input Arguments

modelName — Name of the model

character vector

Create a Simulink.SimulationInput object by passing the name of the model as an argument.

Example: in = Simulink.SimulationInput('cstr')

Properties

ModelName — Name of the model

character vector

Name of the model for which the SimulationInput object is created.

InitialState — Initial state

Simulink.op.ModelOperatingPoint object

Initial state of the model for a simulation specified as a Simulink.op.ModelOperatingPoint object.

ExternalInput — External Input

numerical array, dataset object, timeseries, character array

External inputs added to the model for a simulation.

BlockParameters — Block parameters

array of Simulink.Simulation.BlockParameter

Block parameters of the model that are modified.

Variables — Variables

array of Simulink.Simulation.Variable

Variables of the model that are modified.

ModelParameters — Model parameters

array of Simulink.Simulation.ModelParameter

Model parameters of the model that are modified.

PreSimFcn — Function

MATLAB function

MATLAB function to run before the start of the simulation.

PostSimFcn — Function

MATLAB function

MATLAB function to run after each simulation.

UserString — User string

character array

Brief description of the simulation specified as a character array.

Methods

Method	Purpose
setModelParameter	Set model parameters to be used for a specific simulation through SimulationInput object.
setBlockParameter	Set block parameters to be used for a specific simulation through SimulationInput object.
setInitialState	Set initial state to be used for a specific simulation through SimulationInput object.
setExternalInput	Set external inputs for a simulation through SimulationInput object.
setVariable	Set variables for a simulation through SimulationInput object.
setPreSimFcn	Specify a MATLAB function to run before start of each simulation through SimulationInput object.
setPostSimFcn	Specify a MATLAB function to run after each simulation is complete through SimulationInput object.
applyToModel	Apply changes to the model specified through a SimulationInput object.
validate	Validate the contents of the SimulationInput object.
loadVariablesFromMATFile	Load variables from MAT-file into a Simulink.SimulationInput object.

Examples

Create a Simulink.SimulationInput Object

This example shows you how to create a SimulationInput object.

Open the model.

openExample('simulink/OpenTheModelExample');
open_system('ex_sldemo_househeat');
load_system('ex_sldemo_househeat')

Create a single SimulationInput object for a model.

model = 'ex_sldemo_househeat';
in = Simulink.SimulationInput(model);

Create an Array of Simulink.SimulationInput Objects

This example shows you how to create an array of SimulationInput objects.

Create an array of SimulationInput objects by using the for loop.

model = 'vdp';
for i = 10:-1:1
   in(i) = Simulink.SimulationInput(model);
end

Set Block Parameters using an Array of Simulink.SimulationInput Objects

This example modifies the block parameters of a model through the SimulationInput object.

Open the model.

openExample('simulink/OpenTheModelExample');
open_system('ex_sldemo_househeat');
load_system('ex_sldemo_househeat')

Create a SimulationInput object for this model.

mdl = 'sldemo_househeat';
in = Simulink.SimulationInput(mdl);

Modify block parameter.

in = in.setBlockParameter('ex_sldemo_househeat/Set Point','Value','300');

Simulate the model.

out = sim(in)

Use Dataset as External Inputs with a Simulink.SimulationInput Objects

This example shows how use Dataset objects to set external inputs with Simulink.SimulationInput objects.

Open the model

mdl = 'sldemo_mdlref_counter';
open_system(mdl);

Create a Dataset object for this model.

t = (0:0.01:10)';
ds = Simulink.SimulationData.Dataset;
ds = ds.setElement(1, timeseries(5*ones(size(t)),t)); % First element
ds = ds.setElement(2, timeseries(10*sin(t),t)); % Second element
ds = ds.setElement(3, timeseries(-5*ones(size(t)),t)); % Third element

Create a Simulink.SimulationInput object and set the external inputs

in = Simulink.SimulationInput('sldemo_mdlref_counter');
in = in.setExternalInput('ds.getElement(1),ds.getElement(2),ds.getElement(3)');

Add other remaining variables in the expressions. Ensure that the dataset is also on the SimulationInput object.

Simulate the model.

in = in.setVariable('ds',ds);

Simulate the model

out = parsim(in)