Model predictive control for slurry pipeline transportation of a cutter suction dredger

Wei, Changyun; Wei, Yi; Ji, Ze

doi:10.1016/j.oceaneng.2021.108893

Cited by 18 publications

(2 citation statements)

References 21 publications

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“…PID controllers have been extensively utilized in this industry for regulating flowrate and other physical variables. However, the design of an optimal PID controller for a transportation lag system characterized by a first-order plus time delay can pose challenges [1]- [4]. When designing a PID controller for a transportation lag system with a first order plus time delay, it is important to consider the specific characteristics and requirements of the system [5]- [7].…”

Section: Introductionmentioning

confidence: 99%

Advanced Flowrate Control of Petroleum Products in Transportation: An Optimized Modified Model Reference PID Approach

Yaseen,

Mhmood,

Subhi

et al. 2023

Journal of Robotics and Control

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Efficient flowrate control is paramount for the seamless operation and reliability of petroleum transportation systems, where precise control of fluid movement ensures not only operational efficiency but also safety and cost-effectiveness. The main aim of this paper is to develop a highly effective modified model reference PID controller, tailored to ensure optimal flowrate control of petroleum products throughout their transportation. Initially, the petrol transportation process is analyzed to establish a suitable mathematical model based on vital factors like pipeline diameter, length, and pump attributes. However, using a basic first-order time delay model for petrol transportation systems is limiting due to inaccuracies, variable delay issues, safety oversights, and real-time control complexities. To improve this, the delay portion is approximated as a third-order transfer function to better reflect complex physical conditions. Subsequently, the PID controller is synthesized by modifying its structure to address flowrate control issues. These modifications primarily focus on the controller’s derivative component, involving the addition of a first-order filter and alterations to its structure. To optimize the proposed controller, the genetic, black hole, and zebra optimization techniques are employed, aiming to minimize an integral time absolute error cost function and ensure that the outlet flow of the controlled system closely follows the response of an appropriate reference model. They are chosen for their proficiency in complex optimization to enhance the controller's effectiveness by optimizing parameters within constraints, adapting to system dynamics, and ensuring optimal conditions. Through simulations, it is demonstrated that the proposed controller significantly enhances the stability and efficiency of the control system, while maintaining practical control signals. Moreover, the proposed modifications and intelligent tuning of the PID controller yield remarkable improvements compared to previous related work, resulting in a 36% reduction in rise time, a 63% reduction in settling time, an 80% reduction in overshoot, and a 98% reduction in cost value.

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Section: Introductionmentioning

confidence: 99%

Advanced Flowrate Control of Petroleum Products in Transportation: An Optimized Modified Model Reference PID Approach

Yaseen,

Mhmood,

Subhi

et al. 2023

Journal of Robotics and Control

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“…As a result, the transport of polymetallic nodules as a slurry through pipelines is a challenging task and require further improvements to overcome the low transportation capacity and high abrasive wear. There has been a great deal of work aimed on the optimization of the transportation pipeline system to provide improved transportation efficiency and prevention of slurry pipeline blockages and consequently enhancing the mining performance of deep ocean critical metals, either by concentrating on the operating conditions (e.g., velocities, direction, wetness) [8][9][10][11] or by focusing on the slurry properties (e.g., size, shape, concentration) [12][13][14][15]. Li et al [16] numerically investigated the mechanism of resistance reduction by adding finer particles on coarse-particle slurry in pipelines.…”

Section: Introductionmentioning

confidence: 99%

The Impact of Swirls on Slurry Flows in Horizontal Pipelines

Shi

Yuan

2021

JMSE

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In deep ocean transportation pipeline, the swirling internal flow has a significant impact on the marine minerals transportation efficiency and safety. Therefore, the present work investigates various swirl flow motions for the slurry transport characteristics of the multi-sized particulate flow in a horizontal pipeline. Since the internal flow is a liquid-solid-solid mixture, a steady-state three-dimensional Eulerian-Eulerian multiphase approach in conjunction with the k-ω SST turbulence model is implemented for numerical simulation in the commercial CFD software ANSYS FLUENT 17.0. Numerical predictions of the mixture solid concentration distributions are generally in good conformance with experimental measurements. It is clearly revealed the transition of flow regime from heterogeneous to pseudo-homogeneous with the increasing level of swirl intensity at inlet. Compared to non-swirling flow, the swirling flow is of benefit to the multi-sized solid suspension capacity and the transportation efficiency. Moreover, the intense swirling vortex results in a strong influence on the characteristics of the lubrication layer formed by fine solid particles near the bottom of the pipe. These results provide valuable insights regarding the influence of swirl flow on the transport process for deep ocean mining.

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