
Lenze · Drive Solution Designer · Manual · DMS 4.2 EN · 12/2013 · TD23 109
7Applications
7.7 Wheel drive
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7.7.1.1 Symbols used
7.7.2 Data for the entry
7.7.2.1 Wheel diameter
7.7.2.2 Mass of the vehicle
Symbol Description Dimension unit
a
per
Slip acceleration m/s
2
C Wheel flange and lateral friction
d
Whl
Wheel diameter mm
d
Brg
Bearing diameter mm
f Lever arm of rolling friction mm
F’ Specific travelling resistance N/t
F
μ
Force of travelling resistance N
F
vs
Counterforce N
g Gravitational acceleration (g = 9.81 m/s
2
)m/s
2
J
add
Additional moment of inertia kgm
2
J
Car
Moment of inertia of vehicle kgm
2
J
sum
Total moment of inertia kgm
2
m
L
Mass of the payload kg
m
Car
Mass of the vehicle kg
m
sum
Total mass kg
m
Whl
Wheel load of the driven wheel kg
M
vs
Counter-torque Nm
M
g
Lifting torque Nm
M
App
Required torque of the application Nm
M
sds
Stationary torque Nm
M
μ
Friction torque Nm
M
μ0
Max. torque during driving against a limit stop Nm
β Angle of tilt °
μ
Brg
Bearing friction
μ
0
Static friction of wheel/road surface
Symbol Description
d
Whl
Diameter of the wheel that is used to drive the vehicle.
Symbol Description
m
Car
Mass of the vehicle without payload
• The value can be entered directly or calculated using the mass calculator.
• When the motion profile is entered, the payload is assigned to the individual subprofiles.
Mass calculator ( 405)
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