Real-time 3D thermal modeling of a magnetically levitated planar actuator

A transient thermal model used to monitor the temperature distribution in real-time in a long-stroke moving-magnet planaractuator is presented. The temperature distribution in the stator coils of the planaractuator depends on the trajectory of the levitated magnet plate as the set of active coils changes with the position of the translator. Using the presented real-time model, the transient thermal behavior can be investigated. Using this thermal model, the commutation algorithm of the planaractuator is adjusted to actively limit the temperature of the coils, and better spread the temperature over the stator coils.