User`s guide

8 The Root Locus Design GUI
8-22
Check the Step box, as shown below.
Once you check the
Step b ox, an LTI Viewer window opens. The plot type for
this LTI Viewer is the step response and this cannot be changed.
This closed-loop response does not meet the desired settling time requirement
(.05 seconds or less). You can design a compensator so that you do meet the
required specifications.
Designing a Compensator to Meet Specifications
Since the current closed-loop system doesn’t meet both of the required design
specifications, let’s first try increasing the gain to about 33. You can increase
thegainintwoways:
•Edit the
Gain textbox and press the Enter key.
• Move the closed loop set point around with the mouse, while increasing the
gain.