Electromagnetic actuator
AssigneeAxtuator Oy
InventorMika PUKARI
Life of this patent
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Abstract
The invention provides a magnetic actuator including at least two magnets. One magnet is a semi hard magnet and the other magnet is a hard magnet. The hard magnet is configured to open or close the magnetic actuator. The semi hard magnet and the hard magnet are placed adjacent to each other. A change in magnetization polarization of the semi hard magnet is configured to push or pull the hard magnet to open or close a digital lock realised with the magnetic actuator. The magnetic actuator of the invention can also be used to realise a valve.
Claims34
A system comprising:
- a magnetic actuator comprising a semi-hard magnet and a hard magnet;
- a processor;
- and
- a memory storing a program, which, when executed on the processor, performs an operation, the operation comprising:
- receiving an input from a user interface;
- authenticating the input received from the user interface;
- controlling a power source to power a magnetization coil to change magnetization polarization of the semi-hard magnet, in response to successful identification of a user, wherein identification information for the user is stored in a database;
- and
- inducing mechanical movement of the hard magnet based on the magnetization of the semi-hard magnet.
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12-13. (canceled)
16-26. (canceled)
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A method for controlling a magnetic actuator comprising a semi-hard magnet and a hard magnet, the method comprising;
- receiving, using a computer processor, an input from a user interface;
- authenticating, using the computer processor, the input received from the user interface;
- controlling, using the computer processor, a power source to power a magnetization coil to change magnetization polarization of the semi-hard magnet, in response to successful identification of a user, wherein identification information for the user is stored in a database;
- and
- inducing mechanical movement of the hard magnet based on the magnetization of the semi-hard magnet.
42-44. (canceled)
A method for controlling flow of fluid through a conduit using a flow control valve comprising a hard magnet, a semi-hard magnet, and a plunger coupled to the hard magnet, the method comprising:
- receiving, using a computer processor, an input from a user interface;
- authenticating, using the computer processor, the input received from the user interface;
- controlling, using the computer processor, a power source to power a magnetization coil to change magnetization polarization of the semi-hard magnet, in response to successful identification of a user, wherein identification information for the user is stored in a database;
- and
- inducing mechanical movement of the hard magnet and the plunger coupled to the hard magnet, to at least one of allow or restrict flow of the fluid through the conduit, based on the changing the magnetization polarization of the semi-hard magnet to at least one of attract or repel the hard magnet.
Dependencies are inferred from the claim text.