Simulink® Response Optimization™

simset - Modify simulation settings

Syntax

simset(proj,'setting1',value1,'setting2',value2,...)

Description

simset(proj,'setting1',value1,'setting2',value2,...) modifies the simulation settings within the response optimization project, proj. The value of the simulation setting, setting1, is set to value1, setting2 is set to value2, etc.

For a detailed list of simulation options and the possible values they can take, see the reference page for the Simulink^® function simset. The default values of the simulation options for the project are the same as those used by the Simulink model the project is associated with. Changes that are made to the project's simulation settings are only used during simulations that are run as part of the optimization, and they do not affect the simulation settings for the model.

Example

Create a response optimization project for the srotut1 model.

proj=newsro('srotut1','Kint');

Get the simulation settings for this project.

simoptions = simget(proj)

This returns

simoptions = 
         AbsTol: 1.0000e-006
      FixedStep: 'auto'
    InitialStep: 'auto'
        MaxStep: 'auto'
        MinStep: 'auto'
         RelTol: 1.0000e-003
         Solver: 'ode45'
      ZeroCross: 'on'
      StartTime: '0.0'
       StopTime: '50'

Use simset to change the solver type to ode23 and the absolute tolerance to 1e-7.

simset(proj,'Solver','ode23','AbsTol',1e-7)

Check the new values:

sim_settings=simget(proj);
sim_settings.Solver

This shows that the solver is now set to ode23.

ans =
ode23

Check the absolute tolerance:

sim_settings.AbsTol

This value is now set to 1e-7.

ans =
  1.0000e-007

See Also

optimget, optimset, simget

simget

Block Reference