Invention Grant
US08125216B2 Methods and apparatus for angular position sensing using multiple quadrature signals
有权
使用多个正交信号进行角位置检测的方法和装置
- Patent Title: Methods and apparatus for angular position sensing using multiple quadrature signals
- Patent Title (中): 使用多个正交信号进行角位置检测的方法和装置
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Application No.: US12342382Application Date: 2008-12-23
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Publication No.: US08125216B2Publication Date: 2012-02-28
- Inventor: Monica J. Thomas , David J. Haas
- Applicant: Monica J. Thomas , David J. Haas
- Applicant Address: US MA Worcester
- Assignee: Allegro Microsystems, Inc.
- Current Assignee: Allegro Microsystems, Inc.
- Current Assignee Address: US MA Worcester
- Agency: Daly, Crowley, Mofford & Durkee, LLP
- Main IPC: G01B7/14
- IPC: G01B7/14

Abstract:
A sensor minimizes effects of sensor element misalignment with respect to a magnet. In one embodiment, a sensor comprises a magnet, first, second, third, and fourth sensor elements positioned in relation to the magnet, and a signal processing module to process output signals from the first, second, third, and fourth sensor elements and generate first and second differential signals for minimizing effects of positional misalignment of the first, second, third, and fourth sensor elements with respect to the magnet by maximizing a quadrature relationship of the first and second differential signals.
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