A moving magnet actuator is a type of electromagnetic linear actuator.[1] It typically consists of an arrangement of a mobile permanent magnet and fixed coil, arranged so that currents in the coil generate a pair of equal and opposite forces between the coil and magnet.
A voice coil actuator, also called a voice coil motor (VCM), is an electromagnetic linear actuator where the magnet is fixed and the coil is mobile. In this configuration the coil is common called a voice coil.
^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. S2CID 6653631.
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switching sets of contacts, and solenoids, by which a voltage can actuate a moving linkage as in solenoid valves. Before the development of modern electronics...
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diaphragm and an electrified magnet with a spiral wire that wraps around it. The vibrating diaphragm alters the current of the magnet. These alterations of current...
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