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:
Dec. 04, 2012
Filed:
Aug. 22, 2011
Kazuyuki Igarashi, Tokyo, JP;
Hiroshi Yamaguchi, Tokyo, JP;
Satoru Nagase, Tamano, JP;
Koh Murata, Tamano, JP;
Masakatsu Saito, Yokosuka, JP;
Eigou Miyazaki, Yokosuka, JP;
Kazuyuki Igarashi, Tokyo, JP;
Hiroshi Yamaguchi, Tokyo, JP;
Satoru Nagase, Tamano, JP;
Koh Murata, Tamano, JP;
Masakatsu Saito, Yokosuka, JP;
Eigou Miyazaki, Yokosuka, JP;
Mitsui Engineering & Shipbuilding Co., Ltd., Tokyo, JP;
Japan Agency for Marine-Earth Science and Technology, Yokosuka, JP;
Abstract
An automatic vessel position holding control method for holding a vessel position and a vessel heading of a vessel on the ocean in order to reduce a positional deviation and a heading deviation sharply as compared with the conventional automatic vessel position holding control by performing feedforward control for estimating and then compensating for at least one of a wave drifting force and a wave drifting moment that act on the vessel, wherein a vessel position holding control is performed that includes such controls as estimating waves entering the vessel from motion thereof, calculating at least one of the wave drifting force and the wave drifting moment from the estimated waves and performing feedforward control for at least one of the calculated wave drifting force and the calculated wave drifting moment.