Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Rodney K. Blank0
Kenneth L. Schierbeek0
Kenneth Schofield0
Merdad Veiseh0
Eric J. Hoekstra0
Gregory H. DeVette0
Date of Patent
August 4, 2009
Patent Application Number
12032308
Date Filed
February 15, 2008
Patent Primary Examiner
Patent abstract
A compass compensation system is provided for automatically and continuously calibrating an electronic compass for a vehicle, without requiring an initial manual calibration or preset of the vehicle magnetic signature. The system initially adjusts a two axis sensor of the compass in response to a sampling of at least one initial data point. The system further calibrates the compass by sampling data points that are substantially opposite to one another on a plot of a magnetic field and averaging an ordinate of the data points to determine a respective zero value for the Earth magnetic field. The system also identifies a change in magnetic signature and adjusts the sensor assembly.
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