Accession Number : ADA028207


Title :   Sampled Data Adaptive Digital Computer Control of Surface Ship Maneuvers


Descriptive Note : Engineer's thesis


Corporate Author : NAVAL POSTGRADUATE SCHOOL MONTEREY CA


Personal Author(s) : Uhrin, III, John J


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a028207.pdf


Report Date : Jun 1976


Pagination or Media Count : 375


Abstract : The replenishment at sea (RAS) maneuver is studied in detail for heading and speed control. Design of purposefully nonlinear control laws is accomplished for the Mariner hull using the linearized equations of motion in three degrees of freedom. Extensive use of low order modeling and optimal control theory was made. Procedure steps are presented in detail to facilitate redesign for other ship types. The results are verified using DSL simulation for a number of possible RAS scenarios. The control systems are also tested in a sea state to insure proper operation in the presence of external perturbations.


Descriptors :   *MANEUVERS , *NAVAL VESSELS , *REPLENISHMENT AT SEA , COMPUTER PROGRAMS , DIGITAL COMPUTERS , NAVIGATION COMPUTERS , SHIP MOTION , STATIONKEEPING , THESES


Subject Categories : Marine Engineering
      Logistics, Military Facilities and Supplies


Distribution Statement : APPROVED FOR PUBLIC RELEASE