Adaptive fuzzy control for SWATH ship seakeeping characteristics

Abstract

This paper sets out to explore the seakeeping problems of SWATH ships which may have a tendency of instability. An adaptive fuzzy controller is designed to ensure the stability of SWATH pitch motion, and also to reduce the heave motion. When the ship sails in a sea way the coefficients are changing for different heave displacement etc. The controller also anticipates the action of dynamic hydrodynamic working on the ship performance. The adjustable parameters in the used control system are updated using a fuzzy descent adaptation algorithm. Simulation tests show the method's efficiency.

Ride control method of wave-piercing catamaran with T-foil and flaps

“…In this paper, pitch and heave motions of the WPC are mainly studied. The decoupled kinematic equations of heave and pitch are as follows [4,5,6] : 33 Hydrodynamic coefficients in equations are established based on the strip theory. Figure 1 is the block diagram of the ride control system.…”

Competencies Related to Marine Mechatronics Education

“…It has been used in weapon and payload systems, as well as for weapons delivery. Mechatronics methodologies are used for adaptive fuzzy control of the ship steering mechanism, intelligent ship autopilots, routing detection, adaptive automation, and anti-ship missile seekers (Arciszewski et al, 2009;Gauf & Lejune, 2015;Gu, Wei, Xiao, Wu, & Wu, 2002;Liang, Wang, & Ji, 2012;Qi, 2007;Rigatos & Tzafestas, 2006). Figure 4 shows an example of an integrated bridge and navigation system.…”