WOLFRAM SYSTEM MODELER
EddyCurrentTorqueSimple model of a rotational eddy current brake |
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Wolfram Language
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SystemModel["Modelica.Mechanics.Rotational.Sources.EddyCurrentTorque"]
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Information
This information is part of the Modelica Standard Library maintained by the Modelica Association.
This is a simple model of a rotational eddy current brake. The torque versus speed characteristic is defined by Kloss' equation.
Thermal behaviour:
The resistance of the braking disc is influenced by the actual temperature Theatport, which in turn shifts the speed w_nominal at which the (unchanged) maximum torque occurs.
If the heatPort is not used (useHeatPort = false), the operational temperature remains at the given temperature T.
However, the speed w_nominal at which the maximum torque occurs is adapted from reference temperature TRef to the operational temperature.
Parameters (7)
| useSupport |
Value: false Type: Boolean Description: = true, if support flange enabled, otherwise implicitly grounded |
|---|---|
| useHeatPort |
Value: false Type: Boolean Description: = true, if heatPort is enabled |
| T |
Value: 293.15 Type: Temperature (K) Description: Fixed device temperature if useHeatPort = false |
| tau_nominal |
Value: Type: Torque (N⋅m) Description: Maximum torque (always braking) |
| w_nominal |
Value: Type: AngularVelocity (rad/s) Description: Nominal speed (leads to maximum torque) at reference temperature |
| TRef |
Value: Type: Temperature (K) Description: Reference temperature |
| alpha20 |
Value: Type: LinearTemperatureCoefficient20 (1/K) Description: Temperature coefficient of material |
Connectors (3)
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flange |
Type: Flange_b Description: Flange of shaft |
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support |
Type: Support Description: Support/housing of component |
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heatPort |
Type: HeatPort_a Description: Optional port to which dissipated losses are transported in form of heat |
Used in Examples (1)
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Modelica.Mechanics.Rotational.Examples Demonstrate the usage of the rotational eddy current brake |