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. 06, 1992
Filed:
Nov. 19, 1991
Applicant:
Inventors:
Robin C Hossfield, Medway, MA (US);
Joseph R Adamski, Sudbury, MA (US);
Assignee:
Raytheon Company, Lexington, MA (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
B63H / ;
U.S. Cl.
CPC ...
1141 / ; 318588 ;
Abstract
A marine autopilot includes a roll compensation feature to improve autopilot performance. An additional parameter is included in a proportional-integral-derivative control algorithm. The additional term corresponds to the roll angle of the vessel. Since, roll precedes deviation of a vessel from a desired course, the rudder moves to compensate for the disturbance prior to deviation from the desired course. In this way, the vessel's course keeping performance is improved and the overall rudder activity is reduced since the vessel remains more closely aligned with the desired course.