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arXiv · 2210.05496

Experiment Design for Identification of Marine Models

Fredrik Ljungberg·Jonas Linder·Martin Enqvist·Kalevi Tervo
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Abstract

In this work, experiment design for marine vessels is explored. A dictionary-based approach is used, i.e., a systematic way of choosing the most informative combination of independent experiments out of a predefined set of candidates. This idea is quite general but is here tailored to an instrumental variable (IV) estimator with zero-mean instruments. This type of estimator is well-suited to deal with parameter estimation for second-order modulus models, which is a class of models often used to describe motion of marine vessels. The method is evaluated using both simulated and real data, the latter from a small model ship as well as from a full-scale vessel. Further, a standard motion-planning problem is modified to account for the prior-made choice of information-optimal sub-experiments, which makes it possible to obtain a plan for the complete experiment in the form of a feasible trajectory.

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Fredrik Ljungberg, Jonas Linder, Martin Enqvist, Kalevi Tervo. 2022-10-11. Experiment Design for Identification of Marine Models. https://arxiv.org/abs/2210.05496

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