Rockwell-automation 1771-QB Linear Pos. Manual de usuario Pagina 17

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Chapter
2
21
Positioning Concepts
This chapter explains concepts and principles of axis positioning. If you are
thoroughly familiar with the concepts of closed-loop servo positioning, you can
go on to Chapter 3.
Figure 2.1 illustrates a typical method of converting the flow of fluid into a
linear displacement.
Figure 2.1
PistonType
Hydraulic Cylinder
50032
SERVO VALVE
Electric
Control
Hydraulic
Fluid
Hydraulic
Fluid
Hydraulic fluid Hydraulic fluid
Axis
Motion
The servo valve controls the flow of hydraulic fluid into or out of the hydraulic
cylinder. Adding fluid to the left side of the cylinder extends the rod; adding
fluid to the right side retracts it.
Axis Motion
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