Rotary position sensor
First Claim
1. A rotary position sensor comprising:
- a housing assembly adapted for fixation to a relatively fixed portion of a host system;
a galvanomagnetic sensing element carried with said housing assembly;
a rotor assembly disposed for rotation about an axis fixed with respect to said housing assembly;
a magnet carried with said rotor assembly juxtaposed in substantially axial alignment with said galvanomagnetic sensing element for magnetic interaction therewith; and
linkage means adapted for interconnecting said rotor assembly with a relatively displaceable portion of said host system, said galvanomagnetic sensing element operative to produce an output signal indicative of the relative angular portion of said housing assembly and rotor assembly.
1 Assignment
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Accused Products
Abstract
A robust, low cost, compact and highly accurate rotary position sensor is disclosed for measuring the relative angular position (within a range≦180°) of a housing or stator and a rotor. The housing carries a galvanomagnetic sensing element and is adapted for fixation to a relatively fixed portion of a host system. The rotor carrying a magnet is disposed for rotation about a fixed axis with respect to the stator and is interconnected to a relatively moving portion of the host system through intermediate linkage. The magnet is juxtaposed in substantially axial alignment with the galvanomagnetic sensing element for magnetic interaction therewith. The housing defines a cavity to receive potting material for encasing the galvanomagnetic sensing element and an adjacent buffer cavity interconnected by a weir, which diverts ant excess potting material into the buffer cavity.
38 Citations
19 Claims
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1. A rotary position sensor comprising:
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a housing assembly adapted for fixation to a relatively fixed portion of a host system;
a galvanomagnetic sensing element carried with said housing assembly;
a rotor assembly disposed for rotation about an axis fixed with respect to said housing assembly;
a magnet carried with said rotor assembly juxtaposed in substantially axial alignment with said galvanomagnetic sensing element for magnetic interaction therewith; and
linkage means adapted for interconnecting said rotor assembly with a relatively displaceable portion of said host system, said galvanomagnetic sensing element operative to produce an output signal indicative of the relative angular portion of said housing assembly and rotor assembly. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A rotary position sensor comprising:
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a housing assembly carrying a galvanomagnetic sensing element; and
a rotor assembly carried by said housing assembly for relative rotation with respect thereto about a fixed axis, said rotor assembly carrying a magnet which is substantially axially aligned with said galvanomagnetic sensing element for magnetic interaction therewith, said galvanomagnetic sensing element operative to produce an output signal indicative of the relative angular position of said housing assembly and rotor assembly.
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Specification