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This picture shows the SISO Design Task node in the Control and Estimation Tools Manager.
SISO Design Task Node on the Control and Estimation Tools Manager

The SISO Design Task node menu bar contains the following menus:
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Load
To load a saved SISO Design Tool project, select Load from the File menu. This opens the Load Projects window.
Projects are saved as MAT-files. Select the project you want to load from the list, or click ... to browse for projects you can select from, and click OK.

You can exit the MATLAB technical computing environment and later restore the SISO Design Tool to the state you left it in by saving the project. Select Save from the File menu. This opens the Save Projects window.

To save a project, specify a file name and click OK. The current state and configuration of your SISO Design Tool are saved as a MAT-file. To load a saved project, select Load from the File menu (see previous bullet).
Selecting Export from the File menu opens the SISO Tool Export window.

With this window, you can:
Export models to the MATLAB workspace or to a disk
Rename models when exporting
Save variations on models, including open and closed loop models, sensitivity transfer functions, and state-space representations
Exporting to the Workspace. To export models to the MATLAB workspace, follow these steps:
Select the model you want to export from the Component list by left-clicking the model name. To select more than one model, hold down the Shift key if they are adjacent on the list. If you want to save nonadjacent models, hold down the Ctrl key while selecting the models.
For each model you want to save, specify a name in the model's cell in the Export As list. A default name exists if you do not want to assign a new name.
Exporting to a MAT-file. If you want to save your models in a MAT-file, follow steps 1 and 2 and click Export to Disk, which opens this window.

Choose where you want to save the file in the Save in field and specify the name you want for your MAT-file in the File name field. Click Save to save the file.
Close
Use Close to close the SISO Design Tool. This closes all components of the SISO Design Tool.
Undo
Use Undo to go back in design steps. Note that the Undo menu changes when the task you have just performed changes. For example, if you change the compensator gain, the Undo menu item now reads Undo Edit Gain.
Redo
Use Redo to go forward in the design steps. You can only use Redo if you have previously used Undo. Like the Undo menu, the Redo menu changes when the task you have just performed changes. For example, if you change the compensator gain, and then select Undo Edit Gain, the Redo menu item becomes Redo Edit Gain.
SISO Tool Preferences
Select SISO Tool Preferences from the File menu to open the SISO Tool Preferences dialog box.

You can use this window to do the following:
Change units
Add plot grids, change font styles for titles, labels, etc., and change axes foreground colors
Change the compensator format
Show or hide system poles and zeros in Bode diagrams
For a discussion of this window's features, see Setting Toolbox Preferences" online in the Control System Toolbox documentation.
Help
Selecting About the Control and Estimation Tools Manager opens a window with the version number and a copyright notice for this product.
Showing the Control Architecture. Click Show Architecture to open a window that displays the block diagram for your model. For example,

Below the block diagram is a table that shows the default names for each part of the block diagram and the assigned name, if you have one.
Store Design. Click Store Design to save your design to your SISO Design Task node. Click on Design under the node to see a snapshot summary of your design. Click on the Design History node to show a list of all stored designs.
![]() | Opening the SISO Design Tool | Using the SISO Design Task in the Controls & Estimation Tools Manager | ![]() |

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