DocumentCode :
2940760
Title :
Marine propeller dynamics modeling using a frequency domain approach
Author :
Vonnet, Matthieu ; Aït-Ahmed, Nadia ; Loron, Luc
Author_Institution :
CRTT, St. Nazaire
fYear :
2008
fDate :
20-22 July 2008
Firstpage :
1
Lastpage :
6
Abstract :
This paper reports the modeling, identification and experimental validation of a marine propeller dynamic model. In fact, the existing models well reproduce propeller thrust and torque, but only at low dynamics. In practice, the rate of change of propeller rotational speed is then limited by the thruster controllers to avoid unmodeled phenomena. Otherwise important tracking error can occur during transient responses. In both cases, the dynamic performances of the whole controlled system are limited. To avoid this difficulty, we propose a dynamic model for marine propeller based on a frequency domain approach using a Wiener-Hammerstein model. The identification is carried out using a harmonic study of the asymptotic response of the model to a sinusoidally varying input. Simulations and experiments are performed to evaluate the performances of the proposed model.
Keywords :
frequency-domain analysis; marine systems; nonlinear control systems; nonlinear dynamical systems; propellers; stochastic processes; underwater vehicles; Wiener-Hammerstein model; frequency domain approach; marine propeller dynamics modeling; nonlinear system; propeller rotational speed; thruster controller; torque; tracking error; transient response; underwater vehicle control; Fourier series; Frequency domain analysis; Friction; Hydrodynamics; Marine vehicles; Performance evaluation; Propellers; Torque; Underwater vehicles; Vehicle dynamics; Modeling; Nonlinear systems; Propulsion; Simulation; Underwater vehicle control;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Systems, Signals and Devices, 2008. IEEE SSD 2008. 5th International Multi-Conference on
Conference_Location :
Amman
Print_ISBN :
978-1-4244-2205-0
Electronic_ISBN :
978-1-4244-2206-7
Type :
conf
DOI :
10.1109/SSD.2008.4632872
Filename :
4632872
Link To Document :
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