... ABSTRACT In response to the growing demand for ocean space utilization, especially in ocean energy and seabed resource mining, there's an increased need for support vessels with Dynamic Positioning Systems (DPS). While typical DPSs are complex and costly, not all offshore operations require...

... ABSTRACT For dynamic positioning systems, a three degree-of-freedom motion control in the horizontal plane has usually been regarded as adequate for practical applications. However, for marine structures with small water-plane area and low metacentric height, an unintentional coupling...

... ABSTRACT The conventional control algorithm for the dynamic positioning system(DPS) is a PD system. However, it uses constant gains, which are inefficient in time-varying environments. Aimed at the lack of selftuning PD parameters in the conventional PD, an adaptive PD based on the Deep...

... strategy is proposed to improve the stability of dynamic positioning system. The strategy method designs three thrust allocation modes according to the time-varying environmental load and the output of the control system under different operation modes. The switching indicator is set up by considering...

... hydrodynamic behavior in waves (such as wave-free heave motion characteristic, etc.), mooring and dynamic positioning system (interactive effect of surge and pitch motions, etc.), stability performance, general arrangement and structural style (optimum structural design, etc.), and so on. Thus this paper can...

... ABSTRACT Dynamic positioning system is normally used to anchor the wind turbine installation vessel (WTIV) before the unloading of jacking-up legs. The thruster assisted mooring system of WTIV is discussed in this paper, and the positioning capability is compared with dynamic positioning...

... are considered. The non-dimensional hydrodynamic force coefficients are obtained form captive model test. It can offer reference to the low speed ship maneuvering researchers. Dynamic positioning system is a closed-loop control system which provides the control action according to the measured signal to resist...

... estimate of the non-measured vessel(Fossen, 1999). upstream oil & gas environment force ship artificial intelligence control output matrix model predictive control nonlinear model predictive control observer predictive control controller mpc controller dynamic positioning system...

... Abstract The thrust allocation of a ship dynamic positioning system allocates the control force to thrusters by calculating thrust and angle of each thruster. Under extreme sea environment such as gust, the output value of control force is usually beyond the ability of thrusters resulting...

... water depth dynamic positioning system equipment guodong ji icebreaker drilling equipment platform drillship polar drilling drill platform semisubmersible drilling platform exploration upstream oil & gas Current Situation and Development Trend of Arctic Drilling Equipment Guodong Ji...

... ABSTRACT: This paper is concerned with the effect of one thruster failure on the mooring-assisted dynamic positioning system of a semi-submersible platform. The mooring-assisted dynamic positioning system is composed of a class-3 dynamic positioning system and a catenary mooring system...

... ABSTRACT: This paper starts from the hydrodynamic performance of dynamic positioning system propellers of the semi-submersible platform. According to the relevant standards, provided by the register of shipping, which have set the maximum allowable tilt angle of a semisubmersible platform...

... ABSTRACT: The authors developed the 3 Dimensional Dynamic Positioning Systems (hereafter referred to 3-D DPS) for offshore platform. The system consists of a thruster total force and moment distribution element, a command generation element, a thruster manipulation signal determination element...

... ABSTRACT: Dynamic Positioning System (DPS) is an essential requirement for marine vessels and in many offshore platform operations, in order to maintain desired position and heading in the presence of environmental disturbances from wind, waves, and current. Based on DPS, in operating...

... agreement with those of the numerical simulation. target signal neural network controller output layer transfer function controller model network nakamura reference model neuron machine learning backpropagation input layer dynamic positioning system controller network mathematical...

... ABSTRACT Dynamic Positioning System (DPS) is used in FPSO to keep her positional stability in deep waters where the use of conventional mooring systems is generally not available. The Inverse Linear Quadratic (ILQ) optimal servo theory is applied to design control system of DPS in this paper...

... on Dynamic Positioning System with Steerable Thrusters Masahiko Nakamura, Hiroyuki Kajiwara, Wataru Koterayama nd Toru Komaru Kyushu University Kasuga, Japan ABSTRACT The paper is concerned with a dynamic positioning system for a semi-submersible platform model with steerable thrusters. Three different type...

... ABSTRACT The paper is concerned with a dynamic position control for a semi-submersible platform model using a gain scheduled H∞ controller. Offshore platforms are required to control a given position against external forces of ocean current, wind, and waves. A dynamic positioning system using...

... ABSTRACT Dynamic Positioning Systems(DPS) have been widely used for deep sea operations such as station keeping of FPSOs and semisubmersibles, and position tracking of deep sea mining vessels. Especially, since the deep sea mining vessels operate in very deep region, which is deeper than 5,000...

... flexibility to changes in mission requirements, the program is advancing a variety of new innovative concepts for the MOB system and its components. mob domain model upstream oil & gas mobile offshore base offshore industry us government module dynamic positioning system semisubmersible...