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1. Simple criteria
1.1 Definition of an electromagnetic actuator
An electromagnetic actuator is a system capable of converting electrical energy into mechanical energy via a magnetic intermediate stage. This feature makes it fundamentally reversible, unlike some thermodynamic or hydraulic actuators.
This definition excludes eddy-current brakes, which convert mechanical energy into magnetic and then thermal energy, but which are dissipative and non-reversible.
In an electric actuator, energy conversion is generally based on the interaction of at least two magnetic field sources: a power winding, obtained from an electrical circuit, conveying the electrical energy...
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