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:
Oct. 18, 2011
Filed:
Feb. 07, 2008
Keita Ogo, Tokyo, JP;
Toshio Kamiya, Tokyo, JP;
Ken Maeda, Tokyo, JP;
NEC TOSHIBA Space Systems, Ltd., Tokyo, JP;
Abstract
Disclosed is an attitude change control system that is designed to efficiently output a torque for attitude change of a space craft using CMGs and realizes a real time CMG driving rule. A CMG gimbal steering lawgenerates target profiles for setting angle and angular velocity for each gimbal by applying an anisotropic weighted gradient method based upon the necessary torque calculated by a feed back controllerand a feed forward controllerfrom the angle and angular velocity in the target direction from the attitude navigatorand the current angle and angular velocity of the space craft estimated by the attitude estimatoras well as the current condition of each gimbal from the CMG, thereby controlling the CMGfor changing the attitude of the space craft dynamicsto the target direction.