Fault-tolerant control of dynamic positioning vessel by means of a virtual thruster

2011 ◽  
Author(s):  
Mingyu Fu ◽  
Jipeng Ning ◽  
Yushi Wei
Keyword(s):  
Fault Tolerant ◽  
Fault Tolerant Control ◽  
Dynamic Positioning

scholarly journals Integrated Fault Estimation and Fault-Tolerant Control for Dynamic Positioning of Ships

2019 ◽  
Vol 2019 ◽  
pp. 1-15
Author(s):  
Xiaogong Lin ◽  
Heng Li ◽  
Anzuo Jiang ◽  
Juan Li
Keyword(s):  
Fault Tolerant ◽  
Fault Tolerant Control ◽  
Matching Condition ◽  
High Gain ◽  
Iterative Learning ◽  
Fault Estimation ◽  
Linear Matrix ◽  
Dynamic Positioning ◽  
Control Scheme ◽  
Observer Matching Condition

An integrated fault estimation and fault-tolerant control scheme is developed in this paper for dynamic positioning of ships in the presence of an actuator fault. First, an auxiliary derivative output of dynamic positioning ships is constructed in order to satisfy the so-called observer matching condition, and a high-gain observer is designed to exactly estimate the auxiliary derivative outputs. Then, a fault-tolerant controller is developed for dynamic positioning ships based on the iterative learning observer. By means of Lyapunov–Krasovskii stability theory, it is proved that the proposed fault-tolerant controller is able to estimate the total fault effects and states of ships accurately via the iterative learning observer and also to stabilize the closed-loop system. In addition, the parameter design of the proposed fault-tolerant control system can be conveniently solved in terms of linear matrix inequalities. Finally, simulation studies for dynamic positioning ships with actuator faults are carried out, and the results validate the effectivity of the proposed fault-tolerant control scheme.

Thruster fault-tolerant control for dynamic positioning of vessels

2018 ◽  
Vol 80 ◽  
pp. 118-124 ◽  
Author(s):  
Yongyi Lin ◽  
Jialu Du ◽  
Guibing Zhu ◽  
Huazhen Fang
Keyword(s):  
Fault Tolerant ◽  
Fault Tolerant Control ◽  
Dynamic Positioning
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