Fuzzy robust attitude controller design for hydrofoil catamaran

1.INTRODUCTION High speedboatshaveattractedanincreasingatten tionfrombothresearchersandshipyardsduringthe pastdecades1～3].Hydrofoilcatamaranisakindof high speedboatwithexcellentperformance,com posedoftwinV hullsandtwoormorerectanglehy drofoilsatthebottomoftheV typehulls1,2].From itshull bornemodetofoil bornemode,thelargede creaseoftheboat’sdraftbringsoutthedeterioration oftheboat’sself stability,andthesensitivenessto theenvironmentaldisturbances,suchaswavesand winds.Bothsimulati…

Fuzzy robust attitude controller design for hydrofoil catamaran

A robust attitude controller for hydrofoil catamaran throughout its operating envelope is proposed, based on Tagaki-Sugeno (T-S) fuzzy model. Firstly, T-S fuzzy model and robust attitude control strategy for hydrofoil catamaran is presented by use of linear matrix inequality (LMI) techniques. Secondly, a nonlinear mathematical model of hydrofoil catamaran is established, acting as the platform for further researches. The specialty in interpolation of T-S fuzzy model guarantees that feedback gain can be obtained smoothly, while boat's speed is shifting over the operating envelope. The external disturbances are also attenuated to achieve H∞ control performance, meanwhile. Finally, based on such a boat,HC200B-A1, simulation researches demonstrate the design procedures and the effectiveness of fuzzy robust attitude controller.