National Instruments Xmath Interactive Control Design Module ICDM - Manual (Page 48)

Chapter 5 Root Locus Synthesis
Xmath Interactive Control Design Module 5-2 ni.com
Figure 5-1. Root Locus Synthesis Window
The Root Locus Synthesis window consists of, from top to bottom:
• A menu bar with entries Special, Edit, View, and Help.
• A slider and variable edit box for the gain. These controls are used
to show and also to change the controller gain. The gain also can be
changed graphically by dragging the closed-loop poles along the root
locus.
• (Bottom left) The root locus plot. The plot shows selected phase or
gain contours of the loop transfer function along with the plant and
controller poles and zeros. A more detailed description appears
following.
• (Bottom right) Buttons to add/delete/edit poles and/or zeros. Poles,
zeros, and pole-zero pairs also can be created and destroyed using the