User`s guide

Table Of Contents

rltool

11-188

model (sys) in the forward loop of a negative unity feedback system, as shown

in the diagram below.

In this case,

F and H are taken to be 1, while P is sys. If you want to include F

and H in the design model after loading rltool(sys) or rltool(sys,comp),

select the

Import Model menu item from the File menu of the Root Locus

Design GUI to load

F and H.

rltool(sys,comp,LocationFlag,FeedbackSign) allows you to override the

default compensator location and feedback sign.

LocationFlag ca n b e e ither 1

or 2:

•

LocationFlag = 1: Places the comp ensator in the forward path (this is the

default)

•

LocationFlag = 2: Places the compensator in the feedback path

•

FeedbackSign can be either 1 or -1:

FeedbackSign = —1 for negative feedback (this is the default)

FeedbackSign = 1 for positive feedback