Wabash Technologies, Inc.

Gary W Johnson

Robert Herman Luetzow

Todd Anthony Brown

Stanley J Domanski

A magnetic rotational position sensor including first and second magnets spaced apart to define an air gap and cooperating with one another to generate a magnetic field within the air gap extending along an axis of rotation. At least one magnetic flux sensor is positioned within the magnetic field and is operable to sense varying magnitudes of magnetic flux in response to relative rotational movement between the magnetic field and the magnetic flux sensor about the axis of rotation.

Magnetic rotational position sensor

A position sensor including a magnetic circuit comprising a magnet having opposite first and second magnetic poles, a first pole piece having a proximal portion positioned adjacent the first magnetic pole and a distal portion positioned adjacent the second magnetic pole to define a first air gap area with a first magnetic field provided adjacent thereto, and a second pole piece having a proximal portion positioned adjacent the second magnetic pole and a distal portion positioned adjacent the first magnetic pole to define a second air gap area with a second magnetic field provided adjacent thereto. A first magnetic flux sensor is disposed within the first magnetic field to sense varying magnitudes of magnetic flux density and to generate a first output signal. A second magnetic flux sensor is disposed within the second magnetic field to sense varying magnitudes of magnetic flux density and to generate a second output signal.

Magnetic position sensor having dual electronic outputs

A magnetic rotational position sensor comprising a magnetic circuit including a loop pole piece and a magnet, and a magnetic flux sensor adapted to sense varying magnitudes of magnetic flux density associated with the magnetic circuit. The loop pole piece has a peripheral outer wall defining an inner air gap, with the outer wall including an inwardly projecting portion extending into the air gap. The magnet is positioned within the air gap generally opposite the inwardly projecting portion of the loop pole piece. The magnet and the loop pole piece cooperate to generate a magnetic field within the air gap. The magnetic circuit is rotatable about a rotational axis to correspondingly rotate the magnetic field about the rotational axis. The magnetic flux sensor is disposed within the magnetic field to sense a different magnitude of magnetic flux density in response to rotation of the magnetic field about the rotational axis.

A non-contacting magnetic position sensor that produces a magnetic field having improved linear characteristics over an extended sensing range. The magnetic position sensor includes a pair of magnets, a pair of pole pieces extending between the magnets and spaced apart to define an air gap, and a magnetic flux sensor operable to sense varying magnitudes of magnetic flux density along the length of the air gap. The pole piece segments form a stepped interface with each of the magnets and cooperate with the magnets to provide a magnetic field having a magnetic flux density that varies in a substantially linear manner along substantially the entire length of the air gap. The magnetic flux sensor is positioned within the magnetic field and is operable to sense a magnitude of the varying magnetic flux density along the air gap and to provide an output signal representative of a position of the magnetic flux sensor relative to the magnetic field.

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Huntington, IN, United States of America

Gary W Johnson