Electromagnetic actuator
AssigneeAxtuator Oy
InventorMika PUKARI
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Abstract
The invention provides a magnetic actuator (100, 1001, 1002) including at least two magnets. One magnet is a semi hard magnet (310) and the other magnet is a hard magnet (320). The hard magnet (320) is configured to open or close the magnetic actuator (100, 1001, 1002). The semi hard magnet (310) and the hard magnet (320) are placed adjacent to each other. A change in magnetization polarization of the semi hard magnet (310) is configured to push or pull the hard magnet (320) to open or close a digital lock realised with the magnetic actuator 100, 1001, 1002. The magnetic actuator of the invention can also be used to realise a valve.
Claims44
A magnetic actuator (100, 1001, 1002) comprising at least two magnets, characterized in that, one magnet is a semi-hard magnet (310) and other magnet is a hard magnet (320) and the hard magnet (320) is configured to induce mechanical movement by the magnetic actuator (100, 1001, 1002).
A software program product (1100) configured to control operation of a magnetic actuator (100, 1001, 1002) comprising at least two magnets, characterized in that,
- one magnet is a semi-hard magnet (310);
- other magnet is a hard magnet (320);
- and
- a processing module (1200) configured to operate the magnetic actuator (100, 1001, 1002), the processing module comprising:
- an input module (1210) configured to receive an input from a user interface;
- an authentication module (1220) configured to authenticate the input received by the user interface (140);
- a database (1230) to store identification information of one or more users;
- and
- an output module (1240) configured to control a power source to power a magnetization coil (250) to change magnetization polarization of the semi hard magnet (310) in response to successful identification of a user, and configured to control the hard magnet (320) to induce mechanical movement therein 100, 1001, 1002.
A method for controlling a magnetic actuator (100, 1001, 1002), the method (900) comprising;
- providing at least two magnets, characterized in that, one magnet is a semi-hard magnet (310) and other magnet is a hard magnet (320) and the hard magnet (320) induces mechanical movement by the magnetic actuator (100, 1001, 1002).
Dependencies are inferred from the claim text.