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.
Patent No.:
Date of Patent:
Jan. 06, 2026
Filed:
Feb. 15, 2024
Rockwell Collins, Inc., Cedar Rapids, IA (US);
David W. Cripe, Mount Vernon, IA (US);
Rockwell Collins, Inc., Cedar Rapids, IA (US);
Abstract
A system for nulling ambient magnetic fields is disclosed. The system includes a magnetic sensor for detecting an ambient magnetic field, one or more magnetic structures positioned proximate to the magnetic sensor, and a controller. The controller includes one or more processors and is configured to receive a signal from the magnetic sensor, the signal associated with a strength value of the detected magnetic field; compare the strength value to a linear range associated with the magnetic sensor; generate an error signal, via an integrating amplifier, in response to the signal approaching one or more extreme values within the linear range; generate a pulsed current based on the error signal and apply the pulsed current to an electromagnetic coil surrounding the one or more magnetic structures; and adjust a remanent magnetization of the one or more magnetic structures based on the error signal.