User`s guide

8 The Root Locus Design GUI
8-6
Controller Design Using the Root Locus Design GUI
In t h is section, we use the servomechanism example to describe some of the
main Root Locus Design GUI features and operations:
• Opening the Root Locus Design GUI
• Importing models into the Root Locus Design GUI:
- Opening the
Import LTI Design Model window
- Choosing a feedback structure
- Specifying the design model
• Changing the gain set point and zooming:
- Dragging closed-loop poles to change the gain set point
- Zooming
- Storing and retrieving axes limits
• Displaying system responses
• Designing the compensator to meet specifications:
- Specifying the design region boundaries on the root locus
- Placing compensator poles and zeros: general information
- Placing compensator poles and zeros using the root locus toolbar
- Editing compensator pole and zero locations
• Saving the compensator and models to the workspace or the disk
Opening the Root Locus Design GUI
To open the Root Locus Design GUI, at the MATLAB prompt type
rltool