WOLFRAM SYSTEM MODELER

ThumbwheelPotentiometer

Potentiometer controlled by a thumbwheel

Diagram

Wolfram Language

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SystemModel["EducationExamples.ElectricalEngineering.Potentiometers.Components.ThumbwheelPotentiometer"]
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Information

Potentiometer controlled by a thumbwheel. The model consists of two variable resistors, to total resistance of which equal the parameter maxRes. When the thumbhweel is turned all the way to the left, almost all of the total resistance will be present between the right resistor and the wiper pin. This model represents a potentiometer where the wiper pin is slided along a material whose resistance is lineraly proportional to its length. By turning the thumbwheel to the right, the distance between the positive pin and the wiper becomes larger and the resistance between them increases lineraly.

Parameters (4)

minAngle

Value: 0

Type: Angle (rad)

Description: Minimum angle for the thumbwheel

maxAngle

Value: 3.14159265358979

Type: Angle (rad)

Description: Maximum angle for the thumbwheel

minRes

Value: 10

Type: Resistance (Ω)

Description: Minimum resistance for the potentiometer

maxRes

Value: 1000

Type: Resistance (Ω)

Description: Maximum resistance for the potentiometer

Connectors (4)

p

Type: PositivePin

Description: Positive electrical pin

n

Type: NegativePin

Description: Negative electrical pin

wiper_pin

Type: Pin

Description: Potentiometer wiper terminal.

flange_a

Type: Flange_a

Description: One-dimensional rotational flange of a shaft (filled circle icon)

Components (13)

R1

Type: VariableResistor

Description: Resistance between positive pin and wiper.

R2

Type: VariableResistor

Description: Resistance between negative pin and wiper.

R2T

Type: IdealGearR2T

Description: Converter of angle to translational position.

stop

Type: MassWithStopAndFriction

Description: Boundry of the thumbwheel.

pos

Type: PositionSensor

Description: Position sensor of the thumbwheel.

minPhi

Type: Constant

Description: Constant signal with minimum angle.

p_add

Type: Add

Description: Position map to resistance.

n_add

Type: Add

Description: Position map to resistance.

minAdd

Type: Add

Description: Minimum position compared to potentiometer position.

maxAdd

Type: Add

Description: Maximum position compared to potentiometer position.

maxPhi

Type: Constant

Description: Constant signal with maximum angle.

minResistance

Type: Constant

Description: Constant signal with minimum resistance.

springDamper1

Type: SpringDamper

Description: Linear 1D rotational spring and damper in parallel

Used in Examples (3)

ThumbwheelPotentiometerExample

EducationExamples.ElectricalEngineering.Potentiometers

Thumbwheel potentiometer in normal configuration

RheostatConfiguration

EducationExamples.ElectricalEngineering.Potentiometers

Thumbwheel potentiometer in rheostat configuration

RheostatMotorControl

EducationExamples.ElectricalEngineering.Potentiometers

Motor controlled by a thumbwheel potentiometer in rheostat configuration