Title:
回転絶対位置センサを較正するためのシステム、較正モジュール、および方法
Document Type and Number:
Japanese Patent JP5383607
Kind Code:
B2
Abstract:
A system includes a rotary device, a rotary absolute position (RAP) sensor generating encoded pairs of voltage signals describing positional data of the rotary device, a host machine, and an algorithm. The algorithm calculates calibration parameters usable to determine an absolute position of the rotary device using the encoded pairs, and is adapted for linearly-mapping an ellipse defined by the encoded pairs to thereby calculate the calibration parameters. A method of calibrating the RAP sensor includes measuring the rotary position as encoded pairs of voltage signals, linearly-mapping an ellipse defined by the encoded pairs to thereby calculate the calibration parameters, and calculating an absolute position of the rotary device using the calibration parameters. The calibration parameters include a positive definite matrix (A) and a center point (q) of the ellipse. The voltage signals may include an encoded sine and cosine of a rotary angle of the rotary device.
Inventors:
Donald Earl Davis
Frank Noble Permenter
Nicolaus A. Radford
Frank Noble Permenter
Nicolaus A. Radford
Application Number:
JP2010175523A
Publication Date:
January 08, 2014
Filing Date:
August 04, 2010
Export Citation:
Assignee:
GM Global Technology Operations, Inc.
The United States of America as Represented by the Administrator of the National Aeronautics and Space Administration
The United States of America as Represented by the Administrator of the National Aeronautics and Space Administration
International Classes:
G01D5/244; B25J9/10; B25J19/02
Domestic Patent References:
| JP2008039673A | ||||
| JP3170011A | ||||
| JP2007327770A | ||||
| JP2005181094A | ||||
| JP3117580A |
Attorney, Agent or Firm:
Shinjiro Ono
Kazuo Shamoto
Yasushi Kobayashi
Akio Chiba
Hiroyuki Tomita
Akutsu Katsuhisa
Kazuo Shamoto
Yasushi Kobayashi
Akio Chiba
Hiroyuki Tomita
Akutsu Katsuhisa