Root Locus Synthesis; Overview; Window Anatomy - National Instruments Xmath Interactive Control Design Module ICDM User Manual

Interactive control design module

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Root Locus Synthesis

This chapter describes the user interface, terminology, and parameters used

for root locus synthesis.

The Root Locus window performs two main functions:

•

Displays selected gain and phase contours in the complex plane of the

loop transfer function.

•

Allows the user to manipulate the controller transfer function

graphically by dragging controller poles and zeros, or dragging

the closed-loop poles along the root locus plot.

The Root Locus window only works in SISO mode.

The Root Locus Synthesis window is shown with the standard (default)

contour in Figure 5-1. The branches of the locus connect the zeros and

poles of the loop transfer function, which are shown in the plot. The

closed-loop poles, which are on the locus, also are shown.

5-1

Xmath Interactive Control Design Module

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