In line hall effect detector and method of sensing angular...

Details In line hall effect detector and method of sensing angular... In line hall effect detector and method of sensing angular...

G - Physics

01

D

G01D 5/20 (2006.01) G01D 5/14 (2006.01) G01P 3/42 (2006.01)

Patent

CA 2347386

An apparatus for sensing rotary position that is particularly suited for electrical rotary actuators. The sensing apparatus comprises a magnet and a hall effect detector, both of which are arranged along the axis of rotation. The hall effect detector senses the angle of the return loop of magnetic flux lines from the north to the south pole of the magnet. When the magnet rotates relative to the hall effect detector, the angle of the magnetic flux lines changes which is detected by the hall effect detector. The arrangement of the magnet and the hall effect detector on the shaft axis of a rotary actuator avoids the magnetic flux line interference that is naturally produced by electrical actuators.

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