Noise-cancelling quadrature magnetic position, speed and direction sensor

Preston, Mark A; King, Robert D

Title: Noise-cancelling quadrature magnetic position, speed and direction sensor

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Abstract

An array of three magnetic sensors in a single package is employed with a single bias magnet for sensing shaft position, speed and direction of a motor in a high magnetic noise environment. Two of the three magnetic sensors are situated in an anti-phase relationship (i.e., 180.degree. out-of-phase) with respect to the relationship between the other of the two sensors and magnetically salient target, and the third magnetic sensor is situated between the anti-phase sensors. The result is quadrature sensing with noise immunity for accurate relative position, speed and direction measurements.

Inventors:

Preston, Mark A ^[1]; King, Robert D ^[2]

Niskayuna, NY
Schenectady, NY

Issue Date:: 1996-01-01

Research Org.:: Ford Motor Company, Detroit, MI (United States)

OSTI Identifier:: 870283

Patent Number(s):: 5489844

Assignee:: General Electric Company (Schenectady, NY)

Patent Classifications (CPCs):: G - PHYSICS G01 - MEASURING G01D - MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE

G - PHYSICS G01 - MEASURING G01P - MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK

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G - PHYSICS G01 - MEASURING G01D - MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE
G01D5/147 - {influenced by the movement of a third element, the position of Hall device and the source of magnetic field being fixed in respect to each other}

G - PHYSICS G01 - MEASURING G01P - MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK
G01P3/488 - delivered by variable reluctance detectors
G01P13/045 - {with speed indication}

G - PHYSICS G01 - MEASURING G01D - MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE
G01D3/036 - on measuring arrangements themselves

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DOE Contract Number:: AC07-90ID13019

Resource Type:: Patent

Country of Publication:: United States

Language:: English

Subject:: noise-cancelling; quadrature; magnetic; position; speed; direction; sensor; array; sensors; single; package; employed; bias; magnet; sensing; shaft; motor; noise; environment; situated; anti-phase; relationship; 180; degree; out-of-phase; respect; magnetically; salient; target; third; result; immunity; accurate; relative; measurements; relative position; phase relationship; magnetic noise; magnetic sensors; shaft position; direction sensor; magnetic sensor; /324/

Citation Formats


                    Preston, Mark A, and King, Robert D. Noise-cancelling quadrature magnetic position, speed and direction sensor.  United States: N. p., 1996. 
        Web.

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                    Preston, Mark A, & King, Robert D. Noise-cancelling quadrature magnetic position, speed and direction sensor.  United States.

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                    Preston, Mark A, and King, Robert D. Mon .  
        "Noise-cancelling quadrature magnetic position, speed and direction sensor".  United States.  https://www.osti.gov/servlets/purl/870283.

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@article{osti_870283,

  title        = {Noise-cancelling quadrature magnetic position, speed and direction sensor},

  author       = {Preston, Mark A and King, Robert D},

  abstractNote = {An array of three magnetic sensors in a single package is employed with a single bias magnet for sensing shaft position, speed and direction of a motor in a high magnetic noise environment. Two of the three magnetic sensors are situated in an anti-phase relationship (i.e., 180.degree. out-of-phase) with respect to the relationship between the other of the two sensors and magnetically salient target, and the third magnetic sensor is situated between the anti-phase sensors. The result is quadrature sensing with noise immunity for accurate relative position, speed and direction measurements.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {1996},

  month        = {1}

}

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