..., the fuzzy method and the PID algorithm are combined to develop the fuzzy PID controller, and the genetic algorithm is applied to solve the thrust distribution problem. The dedicated experiments of the DP lifting operation are carried out at Tianjin University. Comparisons between the experimental results...

... control methods, such as PID controllers, adjust the rudder angle and propulsion force to achieve robust control of the system's states. The SMC introduces a sliding surface to achieve control of the system. The MPC optimizes control by considering the system's dynamic characteristics and constraints...

... in conjunction with two degrees of freedom solid body motion equations, including trim and sinkage. Two techniques—multipoint interpolation and PID control—were used to determine the self-propulsion point during the simulation. The computational results of self-propulsion are compared with the extrapolation...

... model without modification and the ordinary PID control model, which meets the comprehensive control requirements and realizes the precise control requirements of TLP ballast tank level height. KEY WORDS: Tension Leg Stable Platform (TLP) ;Ballast tank level control; nonlinear decoration; INTRODUCTION...

... (Amaechi et al, 2022) and (iv) Numerical Investigation into Freak Wave Effects on Deepwater Pipeline Installation (Xu et al, 2020). controls and umbilicals setpoint disturbance parameter subsea system installation equation pid controller modeling & simulation umbilical umbilical bend...

..., Hubei, China ABSTRACT This paper proposes a new algorithm for the fault tolerance control of the X-rudder Underwater Vehicle. First, a fault model of an X-rudder AUV is added to testify to the control effect of the proposed controller. Second, a PID controller with nonlinear decoration to eliminate...

... perturbations of the ROV and adjusts the neural network weights in real time through an adaptive mechanism to ensure stability. The final experimental results show that the proposed method has better control effect compared with PID control. INTRODUCTION At present, trajectory tracking control is the basis...

... caused by the strong subjectivity of traditional PID control in related parameter tuning. Using particle swarm optimization algorithm to optimize the speed control system and achieve automatic optimization of system parameters. The simulation results show that the speed control system optimized by PSO...

... more stable and has a stronger anti-interference ability; Zhang and Yang (2016) used the fuzzy PID control method to control the underwater platform, which has a good control effect in angle control and floating control of the platform; Zhang et al. (2014) proposed an observer-based optimal error...

... ABSTRACT To get better performance of ship path following control under the line-of-sight (LOS) strategy with proportional-integral-derivative (PID) control method, three PID tune methods are introduced and carried out based on real experiments. During the PID tune process, the advantages...

... equations were solved using commercial CFD software Star CCM+ coupled with two degrees of freedom solid body motion equations, including heave and pitch. The self-propulsion point is determined by autonomously adjusting the propeller rotational speed with a PID controller to balance the total ship...

... Abstract In this paper; a nonlinear cascade control strategy is proposed to control the position for underwater platform. Firstly; a double loop feedback controller is constructed to avoid the influence of external disturbance. An enhanced nonlinear PID controller is used to compensate...

... ABSTRACT By controlling the ballast water to adjust the buoyancy of the platform to achieve automatic float. Designing a fuzzy PID controller for the characteristics of strong nonlinearity, time-varying and susceptibility to the process of blowing off ballast water. In order to simplify...

... separation fuzzy PID control algorithm based on engineering experience. Based on this algorithm, the course controller of AUV is designed, and numerical simulation tests are performed. The test results show that the AUV control system is reliable and the control effect is good. INTRODUCTION In recent...

... ABSTRACT The purpose of present paper is to evaluate how the forces and moments acting on the cylinder or the cuboid payload change with the relative postures between the wave incident direction and the offshore crane payload, and to develop a PID controller for the payload to hold its posture...

... on the previous model. Considering the strong nonlinearity and time-varying characteristics of the system, a self-adaptive fuzzy PID controller for the secondary towed vehicle is designed in order to control the depth and attitude state under different working conditions. Finally a series of simulations...

... motion mathematical model theory with the characteristics of continuous curved channel, the typical motion model for inland river ships was built. Thirdly, control strategies and rules for course adaptive control were designed to establish Fuzzy PID controller. Finally, simulation experiments based...

.... This result suggested the difference of preying behavior and motion in the ocean. dynamic stability static stability aerodynamic center major group mesozoic aquatic reptile oscillation test calculation motion simulation hydrodynamic coefficient pure pitch swimming speed pid controller...

... and characteristics. Measured results in field experiments conducted in Komatsu-shima are presented. subsea system remotely operated vehicle adcp vertical water column survey collision avoidance zone upstream oil & gas pid controller water column survey characteristic water current water depth...

.... sea test oil reservoir pitch target production control pitch control kobayashi nylon string production monitoring nakamura pid controller underwater glider long-term monitoring reservoir surveillance air transportation hydraulic pressure hyakudome ocean pitch control performance...