Simulation and design of fuzzy sliding-mode controller for ship heading-tracking
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In considering the characteristic of a rudder, the maneuvers of a ship were described by an unmatched uncertain nonlinear mathematic model with unknown virtual control coefficient and parameter uncertainties. In order to solve the uncertainties in the ship heading control, specifically the controller singular and paramount re-estimation problem, a new multiple sliding-mode adaptive fuzzy control algorithm was proposed by combining Nussbaum gain technology, the approximation property of fuzzy logic systems, and a multiple sliding-mode control algorithm. Based on the Lyapunov function, it was proven in theory that the controller made all signals in the nonlinear system of unmatched uncertain ship motion uniformly bounded, with tracking errors converging to zero. Simulation results show that the demonstrated controller design can track a desired course fast and accurately. It also exhibits strong robustness peculiarity in relation to system uncertainties and disturbances.
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- Simulation and design of fuzzy sliding-mode controller for ship heading-tracking
Journal of Marine Science and Application
Volume 10, Issue 1 , pp 76-81
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- Online ISSN
- Harbin Engineering University
- Additional Links
- ship autopilot
- nonlinear system
- unmatched uncertainty
- multiple sliding mode control
- fuzzy control
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