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. 29, 1989
Filed:
Feb. 21, 1978
Applicant:
Inventor:
Donald E Fulton, Stoneham, MA (US);
Assignee:
The Charles Stark Draper Laboratory, Inc., Cambridge, MA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G05B / ;
U.S. Cl.
CPC ...
318689 ; 318648 ; 33324 ; 74 / ; 74-57 ;
Abstract
A system for generating substantially constant area pulses suitable for application to an inertial instrument torquer. The torquer current pulses are directly utilized to provide an averaging feedback loop wherein the variations in pulse width due to errors in switching pulse times are offset by amplitude control for the pulses. With this system, variations in width of the torquer current pulses are offset in a high speed, closed loop manner with compensation occurring within the pulse interval.