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Appendix I: Notations
Symbols Description Unit
vcs
Valve characteristic signal
3
m
sPa ⋅
Clutch pressure
Pa
b
p
Base pressure
Pa
sp
p
Pressure set point
Pa
v
Q
Valve flow
s
m
3
p
Q
Pump flow
s
m
3
c
Elasticity
3
m
Pa
v
Controller output
s
m
3
u
Controller output after limitation
s
m
3
V
Accumulated volume pressurising the clutch
3
m
sp
V
Set point volume to pressurise the clutch
3
m
Set point response factor -
Controller gain
sPa
m
⋅
3
i
T
Controller integration time
s
d
T
Controller derivation time
s
tr
T
Controller tracking time
s
N
Controller derivation gain limitation -
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