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

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:
 [1];  [2]
  1. Niskayuna, NY
  2. Schenectady, NY
Issue Date:
Research Org.:
FORD MOTOR CO
OSTI Identifier:
870283
Patent Number(s):
5489844
Assignee:
General Electric Company (Schenectady, NY)
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.
Preston, Mark A, & King, Robert D. Noise-cancelling quadrature magnetic position, speed and direction sensor. United States.
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.
@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}
}

Patent:

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