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:
Aug. 18, 1992
Filed:
Jul. 31, 1991
Applicant:
Inventors:
Uday J Shankar, Plainsboro, NJ (US);
Kidambi V Raman, East Windsor, NJ (US);
Assignee:
General Electric Company, East Windsor, NJ (US);
Primary Examiner:
Int. Cl.
CPC ...
B64G / ;
U.S. Cl.
CPC ...
364459 ; 244164 ; 244171 ;
Abstract
An attitude control system for a spacecraft includes sensors for generating attitude control signals and logic for producing torque demand signals in the form of a T.sub.d matrix. The thrusters are oriented in complementary pairs about the center of mass for, when energized, producing mutually opposite torques. Information about the location of thrusters and their thrusts may be represented by a pulse-width-to-torque transformation matrix C. A weighted pseudo inverse of C is precalculated as