The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
May. 17, 2016

Filed:

Sep. 29, 2014
Applicant:

Caterpillar Inc., Peoria, IL (US);

Inventors:

Paul R. Friend, Morton, IL (US);

Frank A. Willis, Canton, IL (US);

Assignee:

Caterpillar Inc., Peoria, IL (US);

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01C 17/38 (2006.01); G01R 33/025 (2006.01); G01C 21/16 (2006.01); G01R 33/02 (2006.01); G01C 21/00 (2006.01);
U.S. Cl.
CPC ...
G01R 33/025 (2013.01); G01C 17/38 (2013.01); G01C 21/005 (2013.01); G01C 21/165 (2013.01); G01R 33/02 (2013.01);
Abstract

A method of determining a heading of a machine having an implement is provided. The method includes determining a first heading data of the machine using an inertial sensor. The method includes determining a second heading data of the machine using a magnetometer. The method includes determining a position of the implement in a stationary state. The method also includes calculating a corrected second heading data based on a predefined relation between the position of the implement in the stationary state and the second heading data. The method further includes determining the heading of the machine based on the first heading data and the corrected second heading data.


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