Moving magnet actuator

A moving magnet actuator is a type of electromagnetic linear actuator.[1] It typically consists of an arrangement of a permanent magnet and coil, arranged so that currents in the coil generate a pair of equal and opposite forces between the coil and magnet. The main difference between this and a voice coil actuator is that in a moving magnet actuator, the magnet is intended to move and the coil to stay still, as opposed to vice versa.

References
  1. Hiemstra, D. B.; Parmar, G.; Awtar, S. (2012). "Performance Tradeoffs Posed by Moving Magnet Actuators in Flexure-Based Nanopositioning" (PDF). IEEE/ASME Transactions on Mechatronics. 19: 201–212. doi:10.1109/TMECH.2012.2226738.

See also
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