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Robust Modeling, Sliding-Mode Controller, and Simulation of an Underactuated ROV Under Parametric Uncertainties and Disturbances

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Abstract

A dynamic model of a remotely operated vehicle (ROV) is developed. The hydrodynamic damping coefficients are estimated using a semi-predictive approach and computational fluid dynamic software ANSYS-CFX™ and WAMIT™. A sliding-mode controller (SMC) is then designed for the ROV model. The controller is subsequently robustified against modeling uncertainties, disturbances, and measurement errors. It is shown that when the system is subjected to bounded uncertainties, the SMC will preserve stability and tracking response. The paper ends with simulation results for a variety of conditions such as disturbances and parametric uncertainties.

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Acknowledgements

The author would like to express his thanks to Newcastle University in Singapore campus for providing the support during the project.

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Correspondence to Cheng Siong Chin.

Appendix

Appendix

Table 1 Damping and added mass coefficients used for RRC ROV model simulation
Table 2 Parameters for ROV model
Table 3 Parameters used in computing uncertainties
Table 4 Controller gains and parameters used

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Eslami, M., Chin, C.S. & Nobakhti, A. Robust Modeling, Sliding-Mode Controller, and Simulation of an Underactuated ROV Under Parametric Uncertainties and Disturbances. J. Marine. Sci. Appl. 18, 213–227 (2019). https://doi.org/10.1007/s11804-018-0037-1

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  • DOI: https://doi.org/10.1007/s11804-018-0037-1

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