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.