SUMMARY:
The application of new propulsion systems and materials
have favoured the development of high speed ships, whose importance will
grow in the future. However, the main problem for this refers to the passengers
comfort and the safety of the vehicles.
The aim of this project is to investigate the
possibilities and advantages of robust and intelligent control techniques
in the control system design for high speed ships. These methods present
the advantage that they have been specifically developed for assuring minimal
levels of stability and capabilities for system disturbances and uncertainties
in the model.
A control problem for a high velocity ship was defined
so that it will be interesting for the ship manufacturers that act like observers
and colaborators. The problem is reduced the vertical accelerations. For
solving the problem, different control methods are utilised: classical control,
robust control, intelligent control and another possible combinations between
them. The robustness of all the solutions are evaluated and the obtained
results arecompared. More adequate controllers will be implemented like a
scale prototype in order to carry out experiments about their real performance
in the sea. Non-linear models for the ship dynamic and the perturbations
are developed for the design, evaluation and verification of the
results.
KEY WORDS: robust control, intelligent control, high-speed
craft, marine vehicles
DURATION: from 1997 to 2000 |