NONLINEAR MODEL IDENTIFICATION OF A MARINE PROPELLER OVER FOUR-QUADRANT OPERATIONS
نویسندگان
چکیده
منابع مشابه
Nonlinear Model Identification of a Marine Propeller over Four-quadrant Operations
This paper proposes a nonlinear dynamics model for a marine propeller able to reproduce the propeller thrust over the full four-quadrant range of propeller shaft speed and vessel speed. A two-state model has been identi ed from experimental data. The model includes a state equation for the propeller shaft speed and one that describes the dynamics of the axial ow velocity. The model reproduces ...
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We propose a four-quadrant propeller model suitable for energy-efficient motion planning of autonomous marine vehicles. The model can be used to capture the main features of experimental thrust and torque curves by using a small number of parameters. We explore the connection between the propeller thrust, torque, and efficiency curves and the lift and drag curves of the propeller blades. The mo...
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This paper reports two speci c improvements in the nite-dimensional nonlinear dynamical modeling of marine thrusters. Previously reported four-quadrant models have employed airfoil theory considering only axial uid ow and using sinusoidal lift/drag curves. First, we present a thruster model incorporating the e ects of rotational uid velocity and inertia on thruster response. Second, we report a...
متن کاملLuca Pivano Thrust Estimation and Control of Marine Propellers in Four - Quadrant Operations
Speed and position control systems for marine vehicles have been subject to an increased focus with respect to performance and safety. An example is represented by drilling operations performed with semi submersible rigs where the control of position and heading requires high accuracy. Drifting from the well position could cause severe damage to equipment and environment. Also, the use of under...
متن کاملThrust Estimation and Control of Marine Propellers in Four- Quadrant Operations
Speed and position control systems for marine vehicles have been subject to an increased focus with respect to performance and safety. An example is represented by drilling operations performed with semi submersible rigs where the control of position and heading requires high accuracy. Drifting from the well position could cause severe damage to equipment and environment. Also, the use of under...
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ژورنال
عنوان ژورنال: IFAC Proceedings Volumes
سال: 2006
ISSN: 1474-6670
DOI: 10.3182/20060329-3-au-2901.00045