The Impact of Analog and Bang-Bang Steering Gear Control on Ship's Fuel Economy

J. C. Nørtoft Thomsen, Mogens Blanke, R. E. Reid, M. Youhanaie

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

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Abstract

The latest years have shown considerable efforts towards improving steering generated propulsion losses of ships by the introduction of various sophisticated control algorithms in the autopilots. However, little previous attention has been given to the steering gear control loop, although it is found to be at least equally important regarding steering performance and fuel economy. The paper presents a comprehensive survey of steering gear principles commonly used, including relevant details of three analog steering gear servo principles, which have outperformed conventional designs. Control system performance is evaluated from direct measurements of speed and fuel consumption, and results from several ships are given. The results presented should enhance the ability of ship owners and steering gear manufacturers to choose and design systems, which will minimize steering generated propulsion losses
Original languageEnglish
Title of host publicationPreprint of Paper to be Presented at IFIP/IFAC 4. International Symposium on Ship Operation Automation.
PublisherInternational Federation of Automatic Control
Publication date1982
Pages51-63.
Publication statusPublished - 1982
EventIFIP/IFAC 4. International Symposium on Ship Operation Automation - Genoa, Italy
Duration: 20 Sep 198222 Sep 1982

Conference

ConferenceIFIP/IFAC 4. International Symposium on Ship Operation Automation
CountryItaly
CityGenoa
Period20/09/198222/09/1982

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