Estimating maneuvering coefficients using system identification methods with experimental, system-based, and CFD free-running trial data

Method for estimating parameters of practical ship manoeuvring models based on the combination of RANSE computations and System Identification

“…This study shows that System Identification is particularly efficient for the prediction of the manoeuvring characteristics when applied to the single ship, confirming the validity of previous works [16]. However, the identifications were also focused on the hull coefficients estimation: in order to conceive a method for offline System Identification with a high robustness, even if in some cases at the expense of the accuracy in the manoeuvres simulation, the number of parameters for the optimization designs has been reduced as much as possible, and the mathematical model and the identification procedure has been gradually constrained, with the purpose to reduce cancellation phenomena.…”

“…In a recent work [16] the effectiveness of the use of free running tests simulated by CFD in SI studies was shown, comparing the outcomes of the identification when using EFD and CFD data. Hydrodynamic coefficients included in a 4 degrees of freedom (DOF) system based model are estimated from only a few CFD free running simulations employing Extended Kalman Filtering (EKF) and Constrained Least Square (CLS) System Identification methods.…”

Literature review on evaluation and prediction methods of inland vessel manoeuvrability

“…However, regression analysis is not applicable for innovative hull types or ships sailing out of test conditions. In order to compensate for the time consuming CFD calculation and high cost model/full-scale tests, system identification methods were applied by Abkowitz (1980), Yoon and Rhee (2003), Zou (2011), andAraki et al (2012).…”

Evaluation of planing craft maneuverability using mathematical modeling under the action of the rudder

“…Hydrodynamic coe cients of maneuvering have been derived in [11] using the system identi cation method based on the experimental, analytical tests, and computational uid dynamic data. They investigated the accuracy of each method in the calculation of the maneuver hydrodynamic coe cients.…”