B. Basic controlling principles
B−22
Festo P.BE−CPX−CMA X−CONTROL−EN en 0908NH
Phases of a posi
tioning process
Calculation
formulae
Description
Acceleration phase
t
1
+
v
a
1
v= programmed speed
a
1
= acceleration for acceleration ramp
s
1
+
a
1
2
@ t
2
1
a
2
= acceleration for braking ramp
t
1
= approach time
Braking phase
t
2
+
v
a
2
t
2
= braking time
t
3
= time with constant speed
=
s
2
+
a
2
2
@ t
2
2
1
=
s
2
= braking path
s
3
= path with constant speed
Consistent movement
s
3
+ s
ges
−(s
1
) s
2
)
s
ges
= complete path
t
3
+
s
3
v