Lenze DSD Manual do Utilizador descarregar pdf (Página 108)

100

101

7Applications

7.7 Wheel drive

108

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

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Alternatively the travelling resistance F’ can be related to the mass [N/t]:

[7-70] Equation 8: Travelling resistance

[7-71] Equation 9: Friction torque

Torque of the application

[7-72] Equation 10: Torque of the application

Spinning

In order to prevent the drive wheels from spinning, a maximum permissible acceleration can be de-

termined. In the calculation the wheel load, the angle of tilt, the total mass, and the friction coeffi-

cient and a possible counterforce (F

) are taken into consideration.

[7-73] Equation 11: Permissible spinning acceleration

Driving against a limit stop

The maximum torque during driving against a limit stop depends on the friction force and the di-

ameter of the driving wheels. After the friction force has been overcome, the torque is reduced by

spinning wheels.

[7-74] Equation 12: Torque at the gearbox output during driving against a limit stop

 Tip!

Further equations to complete the calculations required for an application can be found in

the chapter "Basic calculations

". ( 68)

F’ g

2f βcos⋅⋅

Whl

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

Brg

⋅

Whl

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

c++







1000⋅⋅=

Whl

2000

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

⋅

F’ m

sum

⋅

1000

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

Whl

2000

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

-----

⋅⋅==

App

sds

sum

α⋅+=

per

g μ

Whl

sum

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

βcos βsin–⋅⋅







sum

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

+⋅=

μ0

sum

g μ

Whl

2000

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

βcos⋅⋅⋅⋅=

1 2 ... 103 104 105 106 107 108 109 110 111 112 113 ... 495 496

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