Coordinated steering of a surface ship.
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Authors
Lee, Sang Sik
Subjects
precompensator design to suppress the undesirable cross-coupling effects
Advisors
Thaler, George J.
Date of Issue
1987-09
Date
September 1987
Publisher
Language
en_US
Abstract
The conventional approach to ship steering is to regard the ship as a single input,
single output system without cross-coupling or interaction between speed, yaw and roll.
This approach has found successful application, particularly in conventional vessels
where the amount of cross-coupling is normally slight. But, as a result of tight
maneuvering, the modem warship suffers severe cross-coupling effects because of large
control surfaces, high speed and low tonnage. Consequently, the adoption of a
multivariable approach to ship steering would appear to be more suited for the design
of a steering control system.
This thesis describes the results of a simulation study of pre-compensator design
to suppress the undesirable cross-coupling effects between speed, yaw and roll.
Simulation studies using DSL and Function Minimization are the basis for
accomplishing the design.
Simulation results presented indicate that the adoption of a multi-input, multi-output
approach would result in a significant improvement in the combined steering
and stabilization problem of a warship.
Type
Thesis
Description
Series/Report No
Department
Electrical and Computer Engineering
Organization
Naval Postgraduate School (U.S.)
Identifiers
NPS Report Number
Sponsors
Funder
Format
83 p.
Citation
Distribution Statement
Approved for public release; distribution is unlimited.
Rights
Copyright is reserved by the copyright owner