User`s guide

8 The Root Locus Design GUI
8-38
Additional Root Locus Design GUI Features
This section describes several features of the Root Locus Design GUI not
covered in the servome chanism example. These are listed as follows:
• Specifying design models: general concepts:
- Creating models manually within the GUI
- Designating the model source
• Getting help with the Root Locus Design GUI
• Erasing compensator poles and zeros
• Listing poles and zeros
• Printing the root locus
• Drawing a Simulink diagram of the closed-loop model
• Converting between continuous and discrete models
• Clearing data
Specifying Design Models: General Concepts
In this section we provide general concepts for specifying the design model by
using one or bo th of the following methods:
• Creating models ma nually wit hin the G UI
• Designating the model source:
- The MATLAB workspace
- A MA T- file
- An open or saved Simulink model
Creating Models Manually Within the GUI
You can create models for root locus analysis manually in the Import LTI
Design Model
window using tf, ss,orzpk. To do so, just edit the text boxes
next to
P, F,orHusing any of these MATLAB expressions. You can also use a
scalar number to specify
P, F,orH.