A HYBRID INTELLIGENT CONTROL METHOD APPLIED TO THE DESIGN OF FIN STABILISER SYSTEM FOR SHIPS

摘要

Considerable effort has been dissipated to invent devices which will reduce the rolling of ships. But most of controllers applied in the present fin stabiliser system are PID controllers designed for specific ships and under given sea situations. A hybrid intelligent control(HIC) method integrating conventional control methods, expert system and fuzzy neural network methods on the basis of expert system theory is proposed to make the fin stabiliser system all have satisfactory stablilser effects in various sea situations. Simulation studies are conducted which conclude that hybrid intelligent fin stabiliser system (HICFSS) has stronger robustness and adaptability. HICFSS's performance is compared with conventional PID controller. The results are very encouraging.