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

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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
    Event4th IFIP/IFAC International Symposium on Ship Operation Automation - Genoa, Italy
    Duration: 20 Sept 198222 Sept 1982
    Conference number: 4

    Conference

    Conference4th IFIP/IFAC International Symposium on Ship Operation Automation
    Number4
    Country/TerritoryItaly
    CityGenoa
    Period20/09/198222/09/1982

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