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. 14, 2008
Filed:
Sep. 28, 2004
Tung-ching Tsao, Torrance, CA (US);
Ketao Liu, Cerritos, CA (US);
Tung-Ching Tsao, Torrance, CA (US);
Ketao Liu, Cerritos, CA (US);
The Boeing Company, Chicago, IL (US);
Abstract
A method and apparatus for controlling a gimbaled platform (). The method comprises the steps of computing an acquisition phase gimbal angle rate command ω() from a measured LOS angle error Δθ() for an initial control period T while computing an estimated LOS angle rate {circumflex over (ω)}(), computing a tracking phase gimbal angle rate command ω() using a controller () having an output initialized with the estimated LOS angle rate {circumflex over (ω)}(), and commanding the gimballed platform () according to an angle rate command ω(), wherein the angle rate command ω() is the acquisition phase angle rate command ω() during the initial control period T and the tracking phase gimbal angle rate command ω() after the initial control period T.