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.

The influence of excitation is either constant (useExcitationInput=false) or given by the optional input excitation (useExcitationInput=true). Note that maximum torque depends on square of excitation (magnetic field).

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.