Sign Force - MapleSim Help

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Sign Force

Constant force changing sign with speed

 

Description

Equations

Variables

Connections

Parameters

Modelica Standard Library

Description

The Sign Force component generates a constant force that changes sign with direction of movement.

The parameter reg selects the equation for the force when the magnitude of the velocity is below v0.

Equations

f=fflange=fnom{21+exp−100vv01reg=Exp{1v0vsin12πvv0otherwisereg=Sine{1v0vvv0otherwisereg=Linear{1v0v1cos12πvv0otherwiseotherwise

s=sflangessupport

v=dsdt

if Use Support Flange then fsupport=f

s=sflange{ssupportUse Support0otherwise

Variables

Name

Units

Description

Modelica ID

s

m

Distance between flange and support

s

f

N

Accelerating force acting at flange

f

v

ms

Velocity of flange with respect to support

v

Connections

Name

Description

Modelica ID

flange

Flange of component

flange

support

Conditional Support Flange

support

Parameters

Name

Default

Units

Description

Modelica ID

fnom

 

N

Nominal force

f_nominal

reg

Exp

 

Type of regularization

reg

v0

0.1

ms

Regularization below v0

v0

Use Support Flange

false

 

True (checked) enables the support flange

useSupport

Modelica Standard Library

The component described in this topic is from the Modelica Standard Library. To view the original documentation, which includes author and copyright information, click here.

See Also

1-D Mechanical Overview

Force Drivers