National Instruments Xmath Interactive Control Design Module ICDM User Manual

Page 25

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Chapter 2

Introduction to SISO Design

Xmath Interactive Control Design Module

2-10

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Figure 2-3 shows a simplified schematic representation of the interactive
robustness analysis loop. Here, the user interacts with the Alternate Plant
window, interactively changing the alternate plant transfer function P

alt

,

which is automatically exported to the ICDM Main window for analysis
and display. The user receives graphical information from the Alternate
Plant window displays and also the ICDM Main window.

Figure 2-3 shows a simplified schematic representation of the interactive
design loop.

Figure 2-3. Simple Representation of the Interactive Robustness Analysis

Figure 2-4 shows a simple ICDM session. The ICDM Main window is
shown at upper left, and the Pole Place Synthesis window is at lower right.
The user can drag the closed-loop poles in the Pole Place window. The
controller that is synthesized is automatically exported to the ICDM Main
window for analysis and plotting. Notice that the user’s graphical input is
mostly through the Pole Place window. The ICDM Main window is used
mostly for graphical output.

Designer

G

ICDM Main

Window

Palt (s)

Alternate

Plant

Window

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