Adaptive Parameter Identification of an Accurate Nonlinear Dynamical Model for Marine Thrusters

[+] Author and Article Information
Ralf Bachmayer

Department of Mechanical and Aerospace Engineering, Princeton University, Princeton, NJ 08544 e-mail: ralf@princeton.edu

Louis L. Whitcomb

Department of Mechanical Engineering, The Johns Hopkins University, Baltimore, MD 21218 e-mail: llw@jhu.edu

J. Dyn. Sys., Meas., Control 125(3), 491-494 (Sep 18, 2003) (4 pages) doi:10.1115/1.1591807 History: Received February 15, 2001; Revised October 31, 2002; Online September 18, 2003
Copyright © 2003 by ASME
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Grahic Jump Location
Lift and drag curve approximated by a 82 parameter Fourier series (dashed) and the tabulated lift and drag curves (solid) versus angle of attack α.
Grahic Jump Location
The figure shows three resulting thrust profiles versus time for identical input signals. The solid line represents the experimentally determined thrust, the dashed line is the thrust computed using the 82 coefficient identified plant and the dash–dotted line is the simulated thrust using the tabulated lift and drag curves.



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