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RESEARCH PAPERS: Offshore Mechanics and Arctic Engineering

A Method to Optimize Steering Performance of Conventional Ship Autopilots

[+] Author and Article Information
D. E. Griffin, R. E. Reid

Department of Mechanical and Industrial Engineering, University of Illinois at Urbana-Champaign, Urbana, Ill. 61801

J. Energy Resour. Technol 106(4), 405-411 (Dec 01, 1984) (7 pages) doi:10.1115/1.3231099 History: Received September 02, 1983; Revised April 03, 1984; Online October 22, 2009

Abstract

A method allowing a priori optimization of fixed structure steering controllers is presented. The technique is based on the second method of Lyapunov, and allows optimization of the controller parameter values to a predefined quadratic index of steering quality. The design methodology involved is applied to different controller structures using a 250,000-dwt tanker as an example. The resulting performance is compared to that achievable for a standard setting conventional autopilot on the same ship, using frequency domain analyses. The results presented suggest that the method has the potential to result in improved steering performance.

Copyright © 1984 by ASME
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