Method and apparatus for measurement and control of linear actuator

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United States of America Patent

PATENT NO 9628001
APP PUB NO 20160344312A1
SERIAL NO

14715924

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Abstract

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An apparatus for controlling force of a magnetic lead screw actuator includes a magnetic lead screw actuator, an external control module and at least one sensor device integrated within the magnetic lead screw actuator. The magnetic lead screw actuator includes an electric machine, a rotor, and a translator. The rotor includes a rotor magnet assembly forming first helical magnetic threads along the rotor and the translator includes a translator magnet assembly forming second helical magnetic threads along the translator. Rotation of the rotor by the electric machine effects linear translation of the translator by interaction of the first and second helical magnetic threads. The external control module is electrically operatively coupled to an electric machine controller of the magnetic lead screw actuator. The at least one sensor device integrated within the magnetic lead screw actuator is configured to measure a parameter indicative of a relative displacement between the rotor and the translator and this parameter is provided as feedback to the electric machine controller.

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Patent Owner(s)

Patent OwnerAddress
AALBORG UNIVERSITYP O BOX 159 FR BAJERS VEJ 5 CVR NR 29102384 AALBORG 9100

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Berg, Nick Ilso Aalborg, DK 2 17
Holm, Rasmus Koldborg Aalborg, DK 2 17
Rasmussen, Peter Omand Norresundby, DK 4 71
Suplin, Vladimir Modin, IL 14 99
Trangbaek, Klaus Moshav ein Vered, IL 20 189

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