The paper shows the usefulness of H-infinity techniques in designing a depth-control autopilot for a submarine at periscope depth. It also shows that a significant reduction in nugatory hydroplane activity can be effected if tracking notch filters are included in the autopilot inputs to discriminate against wave frequencies. The results of simulations of a submarine at periscope depth in sea-state 5 in bow and stern seas are given. The simulation uses a full six-degrees-of-freedom nonlinear mathematical model of the submarine. Depth control is maintained using a H-infinity controller designed using a linear mathematical model of the submarine. The inputs to the controller are depth and pitch and the outputs are bow and stern hydroplane angles.


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    Title :

    Submarine periscope-depth depth-keeping using an H-infinity controller together with sea-noise-reduction notch filters


    Additional title:

    Einsatz eines H-Unendlichkeits-Reglers zusammen mit Bandsperren zur Reduzierung der Einflüsse der Wellen an der Meeresoberfläche für die Tauchtiefenregelung eines U-Bootes bei Fahrt in Sehrohrtiefe


    Contributors:


    Publication date :

    1991


    Size :

    8 Seiten, 15 Bilder, 1 Tabelle, 5 Quellen




    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English




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