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Speed Motor

Speed Motor component for R2R systems

 

Description

Variables

Connections

Parameters

Description

The Speed Motor component is a simplified motor model and works as a speed driver. It can drive rollers (Roller, Nip Roller, etc.) or Winders (Unwind Drum or Wind Drum) with a defined web speed.  It is comparable with an ideal speed-controlled motor.

Usage

The Speed Motor component needs a defined web speed on the input port v_web coming from a reference signal or an external control loop (e.g. a tension controller).  This component calculates internally the rotational speed of the motor from the defined web speed and a constant radius from the connected roller. Therefore, it is necessary to parameterize the roller diameter.  If the Speed Motor component is connected to a Unwind Drum or Wind Drum the diameter definition can be switched to the input signal port R_act.  The user has the possibility to connect it to a radius sensor or a radius calculation for the Unwind Drum or Wind Drum. The Speed Motor component has the capability to consider motor dynamic effects.  When the option Add simple motor dynamic is checked, a replacement dynamic as a second order system of a speed-controlled motor is used.

Visualization

The Speed Motor component can be visualized in the 3-D Workspace and 3-D Playback Window to show the placement in the R2R web line and present the user-defined tension zones.  This is optional and supports the interpretation of a R2R web line. The position of the motor in the x-y plane is needed as well as the roller length, the motor length and the motor diameter.  The color can be also defined by the user.

Variables

Name

Units

Description

Modelica ID

R

m

Current radius of the connected WH component

R

Connections

Name

Description

Modelica ID

flangea

Rotational flange on shaft of motor

flange_a

vweb

Real signal input; reference value for web speed

v_web

Ract

Real signal input; actual roller/drum radius [1]

R_act

[1] Enabled when Use radius input (BDact) is true.

Parameters

Settings

Name

Default

Units

Description

Modelica ID

Use radius input

false

 

Variable (true) or constant (false) roller diameter

BDact

D

0.2

m

Diameter of the driven roller

D

Add simple motor dynamic

false

 

When checked (true) a replacement dynamic as a second order system of a speed controlled motor is used

Bdyn

ωdyn

100

rads

Angular frequency of the SO filter

wDyn

Ddyn

1

 

Damping of the SO filter

DDyn

Visualization

These parameters are accessible when Show motor (visMotor) is checked (true).

Name

Default

Units

Description

Modelica ID

Show motor

false

 

When checked (true), the motor is visualized in 3D

visMotor

Side

Back of the R2R machine

 

Motor position in z direction (back or front)

visBack

L

1.2

m

Length of the roller

L

r

0,0

m

Position of the motor center in the x-y plane

InitPos

Lm

0.3

m

Length of the motor

Lm

Dm

0.25

m

Diameter of the motor

Dm

color

Deep Sky Blue

 

Color of the motor

color

I/O Units

Name

Value

Description

Modelica ID

vUnit

ms

Unit selection for the vweb input

velocityUnits

RUnit

m

Unit selection for the Ract input [1]

lengthUnits

[1] Accessible if Use radius input is checked (true)

See Also

Drives

Web Handling Library