Ship pitch-roll stabilization by active fins using a controller based on onboard hydrodynamic prediction

Huang, Li‐Min; Han, Yang; Duan, Wenyang; Zheng, Yi; Ma, Shaoping

doi:10.1016/j.oceaneng.2018.06.014

Cited by 18 publications

(2 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In a similar way, [13] studied on pitch-roll stabilization problem by active fins. However, although the proposed control strategy considers magnitude bound on the angle-of-attack, it does not consider any rate constraint on the control signal which makes it difficult to realise on a full-sized ship having huge control 35 fins with very large time constants.…”

Section: Introductionmentioning

confidence: 98%

A model predictive vertical motion control of a passenger ship

2019

View full text Add to dashboard Cite

In this study, the design problem of a Model Predictive Controller (MPC) for attenuation of vertical motions of a passenger ship which is subject to irregular wave excitations is investigated. The proposed design considers actuator amplitude and rate saturation phenomenon. The motion control system of the ship utilises a pair of active stabilizing fins mounted to the head and tail. First, irregular long crested head waves are implemented by a well-established randomization theory in order to find heave force and pitch moment at F n = 0.40 and F n = 0.50 in the time domain. Then, a two-degree-of-freedom mathematical model, in which pitch and heave motions are coupled with the approximation of convolution integrals is solved to obtain the uncontrolled motions and accelerations of the ship. Finally, considering the physical amplitude and rate limitations of the active fin mechanism, an MPC design is proposed to obtain a practically applicable state-feedback control law for attenuating vertical motion of a passenger ship. The performance of the MPC is also compared with an elipsoid based H ∞ controller. An extensive amount of simulation studies are presented at the end to illustrate the effectiveness of the proposed approach.

show abstract

Section: Introductionmentioning

confidence: 98%

A model predictive vertical motion control of a passenger ship

2019

View full text Add to dashboard Cite

show abstract

“…Fixed and active appendages are commonly used for ship motion reduction, and stabilization methods for other ships can be applied to catamarans as well. The fin and rudder are stability appendages that are often applied to roll motion reduction, [15][16][17] while the T-foil, flap, bilge keel, and anti-rolling tank have also been applied to ship stabilization control. [18][19][20][21] Liang et al 22 performed simulations with a Magnus rotating roll stabilizer, and their results showed that this appendage effectively reduces the roll of a ship by up to 77.4% a speed of 6 kn.…”

Section: Introductionmentioning

confidence: 99%

Experimental and numerical investigation on control strategies for heave and pitch motion reduction of a catamaran

Zheng

Liu

Guo-sheng

et al. 2021

Proceedings of the Institution of Mechanical Engineers, Part M:

View full text Add to dashboard Cite

In this study, simulations and experiments were conducted on reducing the heave and pitch motions of a catamaran. To serve as stability appendages, an actively controlled T-foil and flap were designed, including their dimensions and installation position on the catamaran. Based on the uncoupled analysis of the appendages, the following control strategies were adopted: the previously proposed resultant force and moment distribution with feedback by displacement (RFMD-D) and the newly developed resultant force and moment distribution with feedback by velocity (RFMD-V). These two control strategies were applied to an S-plane controller, and their performances were tested in simulations and experiments. Finally, a bare catamaran and catamaran with actively controlled appendages were towed in a towing tank, and the two control strategies were tested. The results showed that both control strategies are effective and that RFMD-V is more effective than RFMD-D.

show abstract