SignForce

Constant force changing sign with speed

    SignForce

Library

Modelica/Mechanics/Translational/Sources

Description

Model of constant force which changes sign with direction of movement.

Please note:
Positive force accelerates in both directions of movement.
Negative force brakes in both directions of movement.

Around zero speed regularization avoids numerical problems.

Parameters

SignForce_0

NameLabelDescriptionData TypeValid Values

mo_useSupport

useSupport

= true, if support flange enabled, otherwise implicitly grounded

Number

0
1

mo_f_nominal

f_nominal

Nominal force (if negative, force is acting as load)

Scalar

mo_reg

reg

Type of regularization

Structure

mo_reg/choice1

Exponential regularization (smooth)

Number

0
1

mo_reg/choice2

Sinusoidal regularization (smooth 1st derivative)

Number

0
1

mo_reg/choice3

Linear regularization

Number

0
1

mo_reg/choice4

Cosine regularization

Number

0
1

mo_v0

v0

Regularization below v0

Scalar

SignForce_1

NameLabelDescriptionData TypeValid Values

mo_s

s

s

Structure

mo_s/fixed

fixed

Cell of scalars

true
false

mo_s/start

start

Cell of scalars

mo_f

f

f

Structure

mo_f/fixed

fixed

Cell of scalars

true
false

mo_f/start

start

Cell of scalars

mo_v

v

v

Structure

mo_v/fixed

fixed

Cell of scalars

true
false

mo_v/start

start

Cell of scalars

Ports

NameTypeDescriptionIO TypeNumber

flange

implicit

Flange of component

output

1

Port 2

implicit

Support/housing of component

input

mo_useSupport