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:
Feb. 19, 2013
Filed:
Jun. 18, 2009
Dan Y. Liu, Rancho Palos Verdes, CA (US);
Richard Y. Chiang, Torrance, CA (US);
Dan Y. Liu, Rancho Palos Verdes, CA (US);
Richard Y. Chiang, Torrance, CA (US);
The Boeing Company, Chicago, IL (US);
Abstract
A system and a method for commanding a spacecraft to perform a three-axis maneuver purely based on 'position' (i.e., attitude) measurements. Using an 'inertial gimbal concept', a set of formulae are derived that can map a set of “inertial” motion to the spacecraft body frame based on position information so that the spacecraft can perform/follow according to the desired inertial position maneuvers commands. Also, the system and method disclosed herein employ an intrusion steering law to protect the spacecraft from acquisition failure when a long sensor intrusion occurs.