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RISAnomalous Behavior of a Marine Gyrocompass
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The kinematics of a gyrocompass configuration whereby the binnacle is pendulously mounted inside a set of gimbals, commonly installed on commercial marine vessels, is examined under vessel pitch ...
A Proposal for Performance Criteria for Propulsion Losses Due to Ship Steering
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The problem of definition of propulsion loss related to ship steering is addressed. Performance criteria representative of propulsion losses due to steering over a range of operating conditions ...
Energy Losses due to Limit-Cycle Behavior of a Large Tanker Under Automatic Steering Control
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The problem of limit-cycle behavior of a 250,000-dwt tanker in full-load and ballast conditions under automatic steering control in calm water is addressed. The approach presented involves digital ...
A Method to Optimize Steering Performance of Conventional Ship Autopilots
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A method allowing a priori optimization of fixed structure steering controllers is presented. The technique is based on the second method of Lyapunov, and allows optimization of the controller ...
Design Analysis of Ship Steering Gear Control Systems
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The paper presents design analyses of ship steering gear control systems. Emphasis is placed on compressibility, leakage, friction, hydrodynamic damping, limiter and relay aspects of systems design. ...
Stability Considerations for Existing Conventional Autopilots on Modern Ship Types
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The directional stability of three modern ship types with conventional nonadaptive autopilots is examined. It is shown that while attempting to improve the course-keeping ability of these ships, ...
Time Domain Simulation of Ship Steering Gear Control Systems
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Considering the effects of oil compressibility, leakage, hydrodynamic damping and friction, in addition to other nonlinearities, such as bang-bang relay, pump saturation and limiters of oil pressure ...
A Steering Control System to Minimize Propulsion Losses of High-Speed Containerships—Part I: System Dynamics
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The problem of steering control of high-speed containerships to minimize propulsion losses is addressed. The approach involves time domain modeling and simulation. A dynamic model of a containership ...
A Steering Control System to Minimize Propulsion Losses of High-Speed Containerships—Part II: Controller Design
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: An approach to design of steering controls for high-speed containerships to minimize propulsion losses is described. It involves time domain modeling and simulation, frequency domain analysis, and ...
Comparison of Optimal Linear Regulators Applied to Minimization of Steering Losses of a Containership in a Seaway Using Frequency Domain Representations
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Linear Quadratic Gaussian (LQG) techniques are applied to the design of a steering controller for minimization of propulsion losses due to steering of a high-speed containership in a seaway. ...