Page 568 - Mechatronics with Experiments

JWST499-Cetinkunt
JWST499-c07

5
Printer: Yet to Come 5 October 9, 2014 8:41 254mm×178mm
y d y
p p p a p b
valve
4 4
pressures,

3 3
Time (s) Time (s) rates,

2 2 flow
actuator:

servo
1 1

x 10 7 (EH)
electrohydraulic actual).
2.5 2 1.5 1 0.5 0 0 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0

Pressure [Pa]
Cylinder position: cmd and mea.

an and
5 5
of
control
Q p Q v Q r i md (desired
x v
c
loop position
4 4
closed

3 3 the cylinder
Time (s) Time (s) of position,

2 2 results
Simulation spool

1 1 and
7.104: command
x 10 3
1 0 0 0 0
0.8 3 0.6 0.4 Flow rate (m /s) 0.2 0.6 0.4 0.2 –0.2 Valve currentcmd and spool position –0.4 FIGURE current

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