Before running an optimization, do one of the following:
In the Design Optimization tool, click Options. Uncheck Update model at end of optimization in the General Options tab.
In the Design Optimization tool, click Options. Select Save optimized variable values as new design variable set in the General Options tab.
Make a copy of the design variable set in the Design Optimization Workspace.
If you want to revert to the initial parameter values after the optimization terminates or you stop the optimization by clicking Stop, select the design variable that contains the initial values in the Design Variable Set drop-down list and click adjacent to Design variables Set. Select the design variables in the dialog box and click Update model variable values to revert the model parameters to their original values.
When using a SISO Design Task, the Start Optimization button becomes a Stop Optimization button after the optimization has begun. To quit the optimization, click the Stop Optimization button. To revert to the initial parameter values, select Edit > Undo Optimize compensators from the menu in the SISO Design Tool window.