National Instruments Xmath Interactive Control Design Module ICDM Instrukcja Użytkownika Strona 62

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© National Instruments Corporation 7-1 Xmath Interactive Control Design Module
7
LQG Synthesis
This chapter discusses the LQG Synthesis window, which is used to
synthesize a linear quadratic Gaussian (LQG) controller for a SISO plant.
If you select LQG synthesis with a MIMO plant, you will get the MIMO
LQG Synthesis window described in Chapter 12, LQG/H-Infinity
Synthesis.
LQG Synthesis Window Anatomy
The LQG Synthesis window is shown in Figure 7-1. From top to bottom,
it contains:
A menu bar with entries Special, Edit, View, and Help.
A message area that describes the synthesis mode (type of controller);
for example,
LQG with integral action.
A control panel for changing the four design parameters:
Control cost parameter (ρ)
Sensor noise parameter (υ)
Integral action time constant (T
int
)
Decay rate or exponential time weighting parameter (a)
These parameters are described in greater detail later in this chapter.
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