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Lenze · Drive Solution Designer · Manual · DMS 4.2 EN · 12/2013 · TD23 107

7Applications

7.7 Wheel drive

_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

7.7.1 Calculations

For a wheel drive according to the drawing the following applies:

Moment of inertia

The moment of inertia J

Car

is the part of inertia which does not change during the processing cycle,

e. g. mass of the vehicle (m

Car

), axes, and wheels.

[7-63] Equation 1: Moment of inertia of the vehicle

The part of the payload mass (m

) is added. This mass can adopt different values within the process-

ing cycle.

[7-64] Equation 2: Total moment of inertia

Stationary torque

The ascertainment of the stationary torque is based on the determination of the vehicle travelling

resistance. It can consist of the proportion of rolling friction, bearing friction, and wheel flange and

lateral friction. Additionally tensile and hoisting forces can act.

[7-65] Equation 3: Total mass

[7-66] Equation 4: Stationary torque

[7-67] Equation 5: Friction torque

[7-68] Equation 6: Counter-torque

[7-69] Equation 7: Lifting torque

Car

add

Whl

2000

-------------





Car

⋅+=

sum

Car

Whl

2000

-------------





⋅+=

sum

Car

sds

++=

sum

-----

1000

-------------

βcos

Brg

2000

-------------

+ μ

Whl

2000

-------------

c⋅+⋅⋅





⋅⋅ ⋅=

Whl

2000

-------------

⋅=

sum

g βsin

Whl

2000

-------------

⋅⋅ ⋅=

1 2 ... 102 103 104 105 106 107 108 109 110 111 112 ... 495 496

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